Lakeshore Road, Boulder Basin, Boulder City

Source document Quoted word for word from HAER NEV,2-BOUC.V,1-. Not written, edited or summarised by this site.

Lakeshore Road/State Route 166 3 miles north of Boulder City/4 miles northeast of Henderson Lake Mead National Recreation Area (NRA), Clark County, Nevada U.S.G.S. 7.5 minute Boulder Beach, Nevada-Arizona and Henderson, Nevada quadrangles Universal Transverse Mercator coordinates: Zone 11 mE mN (southeast end) mE mN (northern most point) mE mN (northwest end) Date of Construction: Engineer: Unknown Builder: National Park Service/A. Teichert and Son, Sacramento, California

Source document Quoted word for word from HAER NEV,2-BOUC.V,1-. Not written, edited or summarised by this site.

Lakeshore Road and associated road features have been determined locally significant under National Register Criteria A and C. Construction of the road opened Lake Mead NRA, an early and major southwestern recreational area, to development and tourism. Construction of the road and associated features reflect building techniques employed in southern Nevada during the as well as construction modifications necessitated by defense buildup prior to World War II. While the road itself has been extensively modified through time, its alignment and associated features (headwalls, culverts, gutters) retain good to excellent integrity. Report Prepared By: Leslie Peterson, Cultural Resource Specialist Steven E.

Daron, Staff Archeologist Lake Mead National Recreation Area National Park Service 601 Nevada Highway Boulder City, Nevada Date: August LAKESHORE ROAD (Nevada State Route HAER NO. Page 2

Description

Lakeshore Road (site is a two-lane, paved highway that parallels the southwestern shoreline of Lake Mead's Boulder Basin. The northwest end of the road lies approximately 4 miles east of Henderson, Nevada, and miles west of Las Vegas Bay on Lake Mead (Figure 1). The southeast end intersects with U.S. Highway 93 at Lake Mead NRA's Alan Bible Visitor Center approximately 3.5 miles east of Hoover Dam. The road consists of miles of paved surface punctuated by water-diversion features such as culverts, gutters, and water overflows located at key drainages (Figure 2; Table 1). These features were designed to accommodate occasional, but dramatic, flash floods associated with the rugged desert terrain.

A 5.7-mile section of the road running from the NRA's visitor center to 0.4 miles south of the Nevada State Fish Hatchery has been reconstructed. Improvements to the road include realignment, widening, and reterraining the grade. All water diversion features have been modified or replaced. This portion of the road is not included in this documentation. The remainder of the road retains the road's original alignment and 52 water diversion features. A 3.1-mile segment running from NRA's boundary 4 miles east of Henderson, Nevada, to Las Vegas Bay is scheduled for reconstruction in the fall of The road's basic alignment will be retained, but all water diversion features will be replaced.

A final, "middle" 4.3-mile segment extending approximately from the Las Vegas Bay to the State Fish Hatchery will be abandoned and a new road alignment constructed closer to the lake's shoreline. Both the extant road and most water diversion features will be retained in situ along this segment. Reconstruction of Lakeshore Road will permit the road to continue its historic use as a major transportation corridor to Lake Mead and Hoover Dam.

Historical Information

The completion of Hoover Dam and inundation of Lake Mead mark two premier Pre-World War II engineering feats. Combined, these engineering accomplishments led to the country's first national recreation area. Where once there had been desert and an uncontrolled river, there was now over 500 miles of scenic shorelines and vast recreational opportunities. Between and the area was jointly administered by the Bureau of Reclamation and National Park Service. In much of this area was added to the National Park System as Lake Mead NRA. Today, this recreational oasis is visited annually by 10 million visitors from across the United States and from most major foreign countries.

Construction of Lakeshore Road in the was instrumental in opening this important recreation area to tourism and development (Las Vegas Evening Review Journal 1935a and Lakeshore Road was constructed as part of the "rim of the lake highway" project. Originally the LAKESHORE ROAD (Nevada State Route HAER NO. Page 3 "rim of the lake highway" project ran from Boulder City along the south and west side of LakeMead to Overton, Nevada, at the lake's extreme northern end. A branch of the road also ran west to Boulder Highway/U.S. 93 in Hinderson, Nevada (Las Vegas Evening Review Journal 1935a). Documentation in this report pertains only to the portions of the road extending from the Nevada State Fish Hatchery to the NRA's boundary east of Henderson (see Figure 1, Phases 2 and 3).

Construction began in (Las Vegas Evening Review Journal 1935a and A contract to build and pave a segment from Hemenway Wash to Las Vegas Bay was awarded in February to A. Teichert and Son of Sacramento, California (Boulder City News 1941a and Work on this portion of the road began in February and was completed in October (Boulder City News Las Vegas Evening Review Journal Road construction was complicated by the rugged drainage patterns typical of the area. Two solutions were developed to overcome the drainage problems (Whittle In the broad, shallow drainages with poorly defined channels where culverts were impractical, overflow sections or dips were constructed in the road.

In the drainages where channels were better defined corrugated culverts from 18 to 48 inches in diameter were used for the smaller drainages. Sectional or multiplate pipes from 75 to 180 inches in diameter were constructed in the larger washes (Whittle Whittle indicates that instead of using concrete headwalls on the multiplate culverts, "the ends [of the culverts] were beveled and mitered at the shop to fit the slopes of the roadway fills, and the fills were then faced with rock riprap 2 [feet] thick.

An apron of this riprap encased in wire mesh was used at the outlets of the pipes to prevent scour" (Whittle He also indicates that concrete was to be used to construct the headwalls on the 18 to 48-inch culverts, but "a shortage of aggregates from local commercial plants due to several nearby defense projects made it necessary to change to cement stone masonry" (Whittle The culverts in question were located between Hemenway Wash and the Las Vegas Bay. The western branch of the "rim of the lake highway" running from Henderson to Las Vegas Bay was surveyed and probably graded in the mid to late-1930s (Las Vegas Evening Review Journal 1935a). Articles in the Las Vegas Evening Review Journal affirm there was a road running from Boulder Highway to the Three Kids Mine and on to Las Vegas Bay.

The road was paved as far as the Three Kids Mine in and early The articles also discuss plans to pave the portion of road from the mine to Las Vegas Bay, however, exact dates for the construction and paving of this section of road have not been located. To summarize, the Lakeshore Road was part of the original "rim of the lake highway" project surveyed in the mid to late-1930s. The section of Lakeshore Road running from the State Fish Hatchery to Las Vegas Bay was constructed and paved in The section of Lakeshore Road running from Las Vegas Bay to the park boundary west of Las Vegas Bay was surveyed and in use as a dirt road by It was improved and paved sometime after early LAKESHORE ROAD (Nevada State Route HAER NO. Page 4 III.

ARCHITECTURAL AND ENGINEERING INFORMATION Architectural and engineering components of Lakeshore Road consist of the road's alignment and associated water diversion features (Note: Due to repeated episodes of paving and repair, the road's original grade no longer is intact and is omitted from documentation). The road's alignment is shown in Figure 1 and accompanying photographs. Water diversion features contained up to five distinct elements: upstream headwalls, culverts, downstream headwalls, aprons, and gutters. Additional documentation of these features can be found in the Field Records associated with this HAER report. UPSTREAM HEADWALLS: An upstream headwall is defined here as any stone, masonry, or cement structure located at the upstream end of a culvert.

Construction Method - Four construction methods were identified. The first type is cement and stone. In this type of headwall the majority of the rocks are unaltered; that is, they have not been cut or dressed to create flat surfaces and square edges. Because the rocks have not been dressed, they do not line up in even, parallel, horizontal rows. Instead, the masonry forms a random pattern on the front or face of the headwalls. Twelve of these construction types were located and are identified as Features LSR 1 through LSR 12 (see Table 1).

They are located along the section of Lakeshore Road from the park boundary east of Henderson, Nevada, to Las Vegas Bay, and are associated with the section of Lakeshore Road constructed after early The second type of construction method is dressed stone. The stones in these headwalls have been cut or worked to form large rectangular blocks and to fit the end of the culverts. The rectangular blocks are stacked like bricks to form the headwalls. A total of 27 of this type of upstream headwall was located and are identified as Features LSR 14 through LSR 17, LSR 19 and LSR 20, LSR 24 through LSR 29, LSR 31 and LSR 32, LSR 35, LSR 37 and LSR 38, LSR 41 and LSR 42, LSR 44 and LSR 45, LSR 47 through LSR 50, and LSR 52 .

They are located along the section of Lakeshore Road that runs from Las Vegas Bay to the State Fish Hatchery, and are associated with the section of Lakeshore Road constructed in The third type of construction method is riprap. Stones are placed on the sloping surface of the road fill covering a large rectangular area around the end of the culverts. Whittle indicates that the rock riprap was two feet thick.

Ten of this type of upstream headwall were located (Features LSR 13, LSR 18, LSR 21, LSR 30, LSR 33 and LSR 34, LSR 40, LSR 43, LSR 46, and LSR They also are located along the section of Lakeshore Road that runs from Las Vegas Bay to the State Fish Hatchery, and are associated with the section of Lakeshore Road constructed in The fourth type of construction method is a cement box with a metal grate. The cement box is at the end of the culvert. The metal grate forms the top of the box and is flush with the ground surface.

Two of this type of upstream headwall were located (Features LSR 23 and LSR They are located along the section of Lakeshore Road constructed in Whittle does not discuss this type of construction method, suggesting that these two features may have been LAKESHORE ROAD (Nevada State Route HAER NO. Page 5 altered from their original form or were a later addition. The rock used in the construction of all the features is of volcanic origin and is locally available. The majority of the rock used is dacite and andacite, with a few basalts and volcanic tuffs also used. Stvle - Four styles of upstream headwalls were identified during this project. The first style is vertical flat-faced. It consists of a vertical wall with a flat side or face at the end of a culvert.

This style is on all of the cement and stone headwalls, Features LSR 1 through LSR 12, and on LSR 17 of the dressed stone headwalls and most of the dressed stone headwalls. The second style is vertical winged and is associated only with the dressed stone headwalls. It consists of a vertical wall at the end of a culvert with a short wall or wing extending into the drainage from the vertical wall on each side of the culvert. This style is on ten headwalls, Features LSR 14, LSR 19, LSR 26, LSR 29, LSR 32, LSR 38, LSR 41, LSR 47, LSR 48, and LSR 50 (Table 1). The third and fourth styles are riprap and cement with metal grate. They are associated with the construction method of the same name. Condition - The condition of each upstream headwall was evaluated based on structural integrity.

A four tier system was used with 90 percent to 100 percent being "excellent," 50 percent to 90 percent being "good," 25 percent to 50 percent being "fair," and less than 25 percent being "poor." A fifth category, "unknown," was used for headwalls partially buried with sediment. All of the cement and stone, dressed stone, and cement with metal grate upstream headwalls are in excellent condition. The condition of the riprap upstream headwalls varies. Five are in excellent condition and include those associated with Features LSR 18, LSR 34, LSR 40, LSR 43, and LSR 51. The riprap upstream headwalls associated with Features LSR 13 and LSR 33 are in good condition. The south end of each of these headwalls is being undercut by erosion and is collapsing.

The riprap upstream headwall associated with Feature LSR 30 is in fair condition. Feature LSR 30 has two large culverts, and the section of headwall on the upstream side between the two culverts is being cut away by erosion. The riprap upstream headwalls associated with Features LSR 21 and LSR 46 are partially buried and their condition is unknown. CULVERTS: All culverts are round. The type of construction material, diameter, and condition of each culvert were recorded. Three types of culverts were identified during this project: cement, corrugated metal, and multiplate. A total of 12 cement culverts were located. They are associated with the cement and stone headwalls at Features LSR 1 through LSR 12.

These features are located along the section of Lakeshore Road from the park boundary to Las Vegas Bay, and are associated with the section of Lakeshore Road constructed after early The cement culverts range in diameter from 18 to 32 inches. A total of 29 corrugated metal culverts were located. They are associated with Features LSR 14 through LSR 17, LSR 19 and LSR 20, LSR 22 through LSR 29, LSR 31 and LSR 32, LSR 35, LAKESHORE ROAD (Nevada State Route HAER NO. Page 6 LSR 37 through LSR 39, LSR 41 and LSR 42, LSR 44 and LSR 45, LSR 47 through LSR 50, and LSR 52. Two of these culverts are associated with the cement box with metal grate headwalls and 26 are associated with the dressed stone headwalls.

The upstream end of the culvert associated with Feature LSR 22 has been plugged and buried and does not have a headwall. These features are located along the section of Lakeshore Road constructed in The corrugated metal culverts range in diameter from 18 to 48 inches. A multiplate culvert is made from a series of corrugated metal plates 52 inches wide. The plates are curved so that when they bolted together they form a round culvert. A total of 12 multiplate culverts were located. Features LSR 13, LSR 18, LSR 21, LSR 33, LSR 34, LSR 40, LSR 43, and LSR 46 each have one multiplate culvert, and Features LSR 30 and LSR 51 each have two multiplate culverts.

These features are located along the section of Lakeshore Road constructed in Multiplate culverts are used only with riprap style headwalls. The number of metal plates used to construct the culverts varies from 5 to 12 creating culverts with diameters ranging from feet to 16 feet. Whittle indicates that the ends of these culverts were "beveled and mitered at the shop to fit the roadway fills." Two corrugated metal drain pipes, 12 inches in diameter, also were located. They are associated with Features LSR 14 and LSR 48. The drain pipe associated with Feature LSR 14 runs from the end of the gutter in Position B to a hole on the south wing of the upstream headwall (see below for discussion on gutter position).

The drain pipe associated with Feature 48 runs from the small headwall at the edge of the road identified as LSR 48a to the north wing of the upstream headwall. The same five condition categories were used for culverts as were used for upstream headwalls. All culverts are in excellent condition except for three, which are associated with Features LSR 3, LSR 21 and LSR 22. The culvert associated with Feature LSR 3 is in good condition, the downstream end of this culvert was damaged at some point and was repaired with a piece of corrugated metal culvert. The condition of the culverts associated with Features LSR 21 and LSR 22 could not be determined.

The upstream end of the culvert associated with Feature LSR 21 is buried, and a new corrugated metal culvert was put inside the original multiplate culvert. The new culvert is dated The culvert associated with Feature LSR 22 is completely buried on its upstream end and is half full of sediment at its downstream end. DOWNSTREAM HEADWALLS: For this report, a downstream headwall is defined as any stone, masonry, or cement structure located at the downstream end of a culvert. Construction Method - Three types of construction method were identified during this project. The three types are cement and stone, dressed stone, and riprap. These are the same construction methods defined above under Upstream Headwalls. Two cement and stone downstream headwalls were located.

They are associated with Features LSR 6 and LSR 8. One dressed stone downstream headwall was located. It is associated with Feature LSR 24. LAKESHORE ROAD (Nevada State Route HAER NO. Page 7 Ten riprap downstream headwalts were located. They are associated with the same features which have riprap upstream headwalls, and include Features LSR 13, LSR 18, LSR 21, LSR 30, LSR 33 and LSR 34, LSR 40, LSR 43, LSR 46, and LSR 51. Condition - All of the downstream headwalls are in excellent condition except for the downstream headwall associated with Feature LSR 46. This downstream headwall is classified as being in good condition because it is partially buried by sediment.

APRON: An apron is a device at the base of some of the downstream headwalls designed to prevent erosion at the downstream end of the culverts. Three types of aprons were identified. The first type is similar to the gutters described below, and consists of flat rocks in a cement matrix. Only one of this type is present, and it is associated with Feature LSR 24. The second type consists of large rocks wrapped in heavy gage wire mesh. This type of apron is associated with Features LSR 18, LSR 33, LSR 40, LSR 46, and LSR 51. Feature LSR 34 has a variation of this type of apron. It consists of a low ridge, 28 feet long, constructed from large rocks and covered in wire mesh. The ridge is parallel to the road and is located approximately 40 feet east of the downstream end of the culvert.

The third type consists of cement. The cement lines the bottom 3 to 4 feet of the drainage walls but not the flat sandy bottom of the drainage. This type of apron is associated with only one feature, LSR 13, and could be a recent addition. All aprons are associated with features located along the section of Lakes ho re Road constructed in The rock and wire mesh aprons and the cement apron are only associated with riprap headwalls. The stone and cement apron is associated with a dressed stone downstream headwall. Condition: LSR 13 apron is in excellent condition, LSR 24, 33, 40, 46, and 51 are fair condition, and LSR 11 is in poor condition. GUTTERS: Gutters are shallow, paved drainage ditches at the edge of drainages.

The gutters are designed to carry water run-off from the road cuts to the drainages to prevent the road fill in the drainages from eroding. Gutters are classified based on their position and construction material. The total length and condition of each gutter was also recorded. Gutter Position - Four positions (A, B, C, and D) were defined based on the location of the gutter in relationship to the drainage and the road. When standing in the drainage on the upstream side facing the road, position A is on the left and position B is on the right. When standing in the drainage on the downstream side facing the road, position C is on the left and position D is on the right. Two types of construction material were identified: cement, and stone and cement.

Cement gutters are crudely constructed, and appear to be added after the road was constructed. The cement gutters are associated with Features LSR 7 and LSR 8, and are in poor and excellent condition, respectively. These features are located along the section of Lakeshore Road from the LAKESHORE ROAD (Nevada State Route HAER NO. Page 8 park boundary to Las Vegas Bay, and are associated with the section of Lakeshore Road constructed after early The stone and cement gutters are very well constructed and consist of flat stones set in cement. The gutters consistently average approximately two feet in width and form a shallow "V" in cross section. The consistent width and squared off sides give the impression that they were constructed using a form or mold. Conditions vary widely (see table 1).

These features were built during the construction phase. IV.

Significance

The portions of Lakeshore Road (Site extending from the NRA boundary east of Henderson to the State Fish Hatchery and has been determined locally eligible to the National Register of Historic Places under Criteria A and C. The site is eligible under Criterion A because of its association with two events. The first event is the opening up of the shore of Lake Mead on the west side of the Boulder Basin to development and tourism.

Historic documents (Boulder City News 1941a, Las Vegas Evening Review Journal 1935a, and Whittle indicate that construction of the Lakeshore Road opened up the Las Vegas Wash (now Las Vegas Bay) and made "accessible for fishing, boating, and recreation the shores of the largest man-made lake in the world" (Whittle The second event is the defense buildup prior to World War II. Whittle indicates that the construction of the headwalls had to be altered because of a shortage of construction materials stemming from the buildup: The only concrete specified in the contract was some 70 [cubic yards] in the headwalls of the 18 to 40-[inch] pipe culverts.

However, a shortage of aggregates from local commercial plants due to several nearby defense projects made it necessary to change to cement stone masonry. (Whittle This event under Criterion A applies to the section of Lakeshore Road constructed in specifically to the headwalls associated with Features LSR 13 through LSR 52. Because Features LSR 1 through LSR 12 are located along the section of Lakeshore Road which was constructed after they do not contribute to the National Register status of the road under Criterion A. Lakeshore Road is eligible under Criterion C because of the vernacular nature of the features and because of the engineering problems associated with building a road in a desert environment.

The vernacular element of Criteria C applies to all of the features located along the section of Lakeshore Road from the park boundary east of Henderson, Nevada, to the State Fish Hatchery, specifically to Features LSR 13 trough LSR 52. Historic documentation is lacking for some of these features, however, they are all vernacular in style and represent the construction methods used during the early to mid-1940s. Whittle describes the engineering problems and the LAKESHORE ROAD (Nevada State Route HAER NO. Page 9 way in which the road, culverts, and headwalls were designed and fabricated to overcome these problems. V.

Sources

Boulder Citv News "Scenic Road Bids in Now." Tuesday, January 28, Vol. 4, No. 19, Boulder City, Nevada, 1941a."Scenic Road Project Starts." Tuesday, February 18, Vol. 4, No. 34, Boulder City, Nevada. D'Ascenzo, Lynne. Archeological Survey of Proposed Realignment. Lakeshore Road. Lake Mead National Recreation Area. Nevada. WACC project number LAME A. On file, Western Archeological and Conservation Center, National Park Service, Tucson, Arizona, Ervin, Richard G. Lake Mead Developed Area Surveys: The LAME 86A Archeological Investigations and Related Projects. Lake Mead National Recreation Area. Nevada and Arizona. Publications in Anthropology No. 41.

Western Archeological and Conservation Center, National Park Service, Tucson, Arizona, Las Vegas Evening Review Journal "Survey Party is Established at Midway to Begin Project." August 13, Vol. 27, No Las Vegas, Nevada, 1935a. Boys to Start Lake Rim Highway." November 9, Vol. 27, No Las Vegas, Nevada, "New Oiled Road Around Lake is Scenic Arterial." October 11, Vol. 33, No Las Vegas, Nevada, "Three Kids Mine Road is Started." June 11, Vol. 34, No Las Vegas, Nevada, "4 Road Projects Being Studied in Las Vegas Area." March 26, Vol. 35, No 72, Las Vegas, Nevada, National Register Bulletin # 15. How To Apply The National Register Criteria For Evaluation. Interagency Resources Division, National Park Service, U.S. Department of the Interior, Washington D. C, Revised Teague, George A.

Trip Report, Lake Mead, Survey of Portions of the Lakeshore Road. Western Archeological and Conservation Center project number LAME D. On file, Cultural Resources Office, Lake Mead NRA, Boulder City, Nevada, Wells, Susan J. Archeological Summary for Proposed Reconstruction of Lakeshore Road Lake Mead National Recreation Area. Nevada. On file, Western Archeological and Conservation Center, National Park Service, Tucson, Arizona, LAKESHORE ROAD (Nevada State Route HAER NO. Page 10 Whittle, George D. "Drainage Problems on New Lake Mead Road: Unusual Conditions Overcome in Construction of Scenic Route on Nevada Side of the Lake." Civil Engineering.

April Vol 12, No VI PROJECT INFORMATION This documentation has been prepared by Lake Mead NRA-National Parks Service, which is proposing to reconstruct Lakeshore Road (Site Reconstruction will entail widening, regrading, recontouring, and paving significant portions of the road. These actions will demolish many extant historic water diversion features. A 4.3-mile portion of the road will be realigned east and north of the current road. The road and features in this segment will remain in place. The extant portion of the road is being considered as a possible hiking and biking trail for park visitors, which will afford additional protection of the historic water diversion features along this segment.

Project Manager for this recordation was Lake Mead NRA Cultural Resource Specialist Leslie Peterson. Field Recordation and archival research was carried out by Staff Archeologist Steven E. Daron. HAER photography was conducted by Bureau of Reclamation Staff Photographer Andy Pernick through an inter-agency agreement with the Bureau's Lower Colorado Regional Office. LAKESHORE ROAD (Nevada State Route HAER No. Figure 1. Lakeshore Road Reconstruction Phases Page 11 LAKE SHORE ROAD (Nevada State Route HAER No. Figure 2. Location of Features LSR 1 through LSR 29 Page 12 LAKESHORE ROAD (Nevada State Route HAERN Figure 3. Location of Features LSR 19 through LSR 52 Cii LAKESHORE ROAD (Nevada State Route HAER NO.

Page 14 Table 1, Site Features and Associated Elements F# UTM Upstream Headwall Culvert Downstream Headwall Gutter Present/Con Zone 11 CM Style Con CM Con Apr A B C D mE CS VF E Cmt 28" mN mE cs VF E Cmt 20" mN mE CS VF E Cmt/CoM mN 26" mE cs VF E Cmt 20" mN mE cs VF E Cmt 26" mN mE cs VF E CS E mN mE cs VF E Cmt 32" P mN mE cs VF E CS E e mN mE cs VF E mN mE cs VF E Cmt 18" mN mE cs VF E Cmt 27" mN mE cs VF E Cmt 20" mN mE RR RR G RR E Cm E mN mE DS VW E CoM 36" P G mN Heading Abbreviations: F # = Feature Number, CM ** Construction Method, Con = Condition, Apr = Apron Note: Under "Gutters Present/Con" lower case indicates a cement gutter, upper case indicates a stone and cement gutter.

Table Codes: Construction Method Style Condition Culvert Apron CS = Cement & Stone MG Metal Grate E = Excellent Cmt - Cement Cm = cement DS Dressed Stone RR = Riprap G = Good CoM = Corrugated Metal R/W = Rocks in MG = Metal Grate VF = Vertical Flat-faced F = Fair Mp = Multiplate wire mesh RR = Riprap VW Vertical Winged P = Poor SC = Stone and U = Unknown cement LAKESHORE ROAD (Nevada State Route HAER NO.

Page 15 Table 1: Continued F# UTM Upstream Headwall Culvert Downstream Headwall Gutter Position/Con Zone 11 CM Style Con CM Con Apr A B C D mE DS VF E CoM24" E G mN mE DS VF E CoM 24" G mN mE DS VF E CoM 24" P mN mE RR RR E RR E R/W E E E mN mE DS VW E CoM 36" mN mE DS VF E CoM 18" G P G mN mE RR RR U Mp/CoM RR E E mN mE CoM 36" F E mN mE MG MG E CoM 24" E G mN mE DS VF E COM 18" DS E SC E E mN mE DS VF E CoM 24" G G mN mE DS VW E CoM 36" E E mN mE DS VF E CoM 18" mN mE DS VF E CoM 18" mN mE DS VW E CoM 28" E E mN Heading Abbreviations: F # = Feature Number, CM = Construction Method, Con = Condition, Apr = Apron Note: Under "Gutters Present/Con" lower case indicates a cement gutter, upper case indicates a stone and cement gutter.

Table Codes: Construction Method Style Condition Culvert Apron CS = Cement & Stone MG * Metal Grate E = Excellent Cmt = Cement Cm = cement DS = Dressed Stone RR Riprap G = Good CoM = Corrugated Metal R/W = Rocks in MG - Metal Grate VF = Vertical Flat-faced F* Fair Mp = Multiplate wire mesh RR - Riprap VW = Vertical Winged P = Poor SC Stone and U Unknown cement LAKESHORE ROAD (Nevada State Route HAER NO.

Page 16 Table 1: Continued F# UTM Upstream Headwall Culvert Downstream Headwall Gutter Position/Con Zone 11 CM Style Con CM Con Apr A B C D mE RR RR F RR E G U mN mE DS VF E CoM24" mN mE DS VW E CoM42" E E mN mE RR RR G RR E R/W E E mN mE RR RR E RR E R/W mN mE DS VF E CoM 24" mN mE E mN mE DS VF E CoM24" E G mN mE DS VW E CoM 48" E E G mN mE MG MG E CoM 18" G E mN mE RR RR E RR E R/W E U E mN mE DS VW E CoM 36" G mN mE DS VF E CoM 24" E mN mE RR RR E RR E U E mN mE DS VF E CoM 24" E U mN Heading Abbreviations: F # = Feature Number, CM = Construction Method, Con = Condition, Apr = Apron Note: Under "Gutters Present/Con" lower case indicates a cement gutter, upper case indicates a stone and cement gutter.

Table Codes: Construction Method Style Condition Culvert Apron CS Cement & Stone MG * Metal Grate E - Excellent Cmt = Cement Cm = cement DS - Dressed Stone RR - Riprap G -Good CoM - Corrugated Metal R/W - Rocks in MG - Metal Grate VF Vertical Flat-faced F = Fair Mp = Multiplate wire mesh RR - Riprap VW - Vertical Winged P = Poor SC = Stone and U = Unknown cement LAKESHORE ROAD (Nevada State Route HAER NO.

Page 17 Table 1: Continued F# UTM Upstream Headwall Culvert Downstream Headwall Gutter Position/Con Zone 11 CM Style Con CM Con Apt A B C D mE DS VF E CoM24" mN mE RR RR U RR G R/W P mN mE DS VW E CoM36" G F mN mE DS vw E CoM 48" E mN LSR48a DS VF E CoM 12" mE DS VF E CoM 24" G mN mE DS VW E CoM 48" F E G mN mE RR RR E 2 Mp 14' RR E R/W G mN mE DS VF E CoM 24" E E mN Heading Abbreviations: F # * Feature Number, CM = Construction Method, Con = Condition, Apr = Apron Note: Under "Gutters Present/Con" tower case indicates a cement gutter, upper case indicates a stone and cement gutter.

Table Codes: Construction Method Style Condition Culvert Apron CS Cement & Stone MG Metal Grate E = Excellent Cmt = Cement Cm = cement DS - Dressed Stone RR = Riprap G = Good CoM Corrugated Metal R/W = Rocks in MG Metal Grate VF Vertical Flat-faced F = Fair Mp = Multiplate wire mesh RR = Riprap VW *= Vertical Winged P = Poor SC = Stone and U = Unknown cement