US Bridges

Topaz ST over Duck Crk

Fair

Clark County, Nevada · SE Las Vegas · Structure no. B2837

Built
2004
21 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
65 ft
2 main spans
Daily traffic
1,000
2017 count
Owner
County
County Highway Agency

About this bridge

Topaz ST over Duck Crk is a concrete culvert carrying Topaz ST over Duck Crk in Clark County, Nevada. It was built in 2004, so it is 21 years old, younger than the Nevada average of 36.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,000 vehicles a day, roughly 3% of them trucks, projected to reach 2,068 by 2040. The structure is 65 ft (19.7 m) long and 62 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesTopaz ST
CrossesDuck Crk
LocationSE Las Vegas
RouteCounty Highway 0
CountyClark County
StateNevada
Coordinates36.05599, -115.11378
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length65 ft (19.7 m)
Longest span32 ft (9.7 m)
Deck width62 ft (18.9 m)
Roadway width49 ft (15 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2017)
Projected traffic2,068 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Topaz ST over Duck Crk built?

It was built in 2004, making it 21 years old in 2025.

What condition is Topaz ST over Duck Crk in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does Topaz ST over Duck Crk carry?

About 1,000 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Topaz ST over Duck Crk?

The structure is 65 ft (19.7 m) long with a longest span of 32 ft (9.7 m) and a deck 62 ft wide.

Who owns Topaz ST over Duck Crk?

It is owned by the County Highway Agency.