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Nearby Bridges in NBI 2021: 3


US 93 over COLORADO RIVER (Route: 93)
Num: B2704x
Open: no restriction [A]
Built: 2010, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Arch - Deck [11]
Approach Span(s): Steel continuous [4] Box beam or girders - Multiple [05]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 581 m = 1906.3 ft
Main Spans: 1 at 332.2 m = 1089.9 ft
Approach Spans: 7
Skew: 0
Width, Roadway: 22.4 m = 73.5 ft (4 Lanes) and Out-To-Out: 26.8 m = 87.9 ft for a 22.4 m = 73.5 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Lake Mead National Recreation Area [38980]: Clark County [003], Nevada [32]
Owned by State Highway Agency [01], DOT District: 1
HOOVER DAM AREA
Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 48.6 metric ton = 53.5 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 37.6 metric ton = 41.4 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Superior to present desirable criteria [9]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] and Bridge foundations (including piles) on dry land well above flood water elevations. [9]
Inspections
Date: January 1999 [199] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.4 km = 0.2 mi
Traffic
ADT: 20000 (2017) and Trucks: 26%
Future ADT: 30000 (In 2040 )
US 93 over Colorado River (Route: 93)
Num:2685x
Open: no restriction [A]
Built: 2010, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Arch - Deck [11]
Approach Span(s): Steel continuous [4] Box beam or girders - Multiple [05]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 580.9 m = 1905.9 ft
Main Spans: 9 at 332.2 m = 1089.9 ft
Approach Spans: 7
Skew: 0
Width, Roadway: 22.4 m = 73.5 ft (4 Lanes) and Out-To-Out: 26.8 m = 87.9 ft for a 22.3 m = 73.2 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Mohave County [015], Arizona [04]
Owned by State Highway Agency [01], DOT District: 88
Hoover Dam: NV border
Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 48.3 metric ton = 53.1 tons (Unknown [F])
Inventory: 37.3 metric ton = 41.0 tons (Unknown [F])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Superior to present desirable criteria [9]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: January 1999 [199] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.6 km = 0.4 mi
Traffic
ADT: 17000 (2014) and Trucks: 26%
Future ADT: 18000 (In 2034 )
SR 172 over Canyon Relief (Route: 172)
Num: 0305-B1868x
Open: no restriction [A]
Built: 1990, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.4 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete continuous [6] Segmental box girder [21]
Approach Span(s): Prestressed concrete continuous [6] Box beam or girders - Multiple [05]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:
Bridge Dimensions
Length: 199.4 m = 654.2 ft
Main Spans: 2 at 80.8 m = 265.1 ft
Approach Spans: 2
Skew: 0
Width, Roadway: 10.4 m = 34.1 ft (2 Lanes) and Out-To-Out: 13.2 m = 43.3 ft for a 12.5 m = 41.0 ft approaching roadway.
Vertical Clearance: 21.95 m = 72.0 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Clark County [003], Nevada [32]
Owned by Bureau of Reclamation [69], DOT District: 0
Hoover Dam
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 97.2 metric ton = 106.9 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 93.3 metric ton = 102.6 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: December 1999 [1299] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.3 km = 0.8 mi
Traffic
ADT: 1300 (2012) and Trucks: 1%
Future ADT: 1900 (In 2039 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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