US Bridges

I-25 Nbl over Lake Absarraca

Fair

Laramie County, Wyoming · Cheyenne Marginal · Structure no. ABN

Built
1957
68 years old, rebuilt 1987
Condition
Fair
inspected April 2023
Type
Frame
Concrete
Length
50 ft
1 main span
Daily traffic
12,534
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl over Lake Absarraca is a concrete frame carrying I-25 Nbl over Lake Absarraca in Laramie County, Wyoming. It was built in 1957 and reconstructed in 1987, so it is 68 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 12,534 vehicles a day, roughly 9% of them trucks, projected to reach 17,548 by 2043. The structure is 50 ft (15.2 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-25 Nbl
CrossesLake Absarraca
LocationCheyenne Marginal
RouteInterstate 25
CountyLaramie County
StateWyoming
Coordinates41.16155, -104.83941
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 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 geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.5 US tons
Inventory rating33.8 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length50 ft (15.2 m)
Longest span30 ft (9.1 m)
Deck width47 ft (14.2 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,534 (2024)
Projected traffic17,548 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-25 Nbl over Lake Absarraca built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1987.

What condition is I-25 Nbl over Lake Absarraca 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 April 2023.

How much traffic does I-25 Nbl over Lake Absarraca carry?

About 12,534 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is I-25 Nbl over Lake Absarraca?

The structure is 50 ft (15.2 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.

Who owns I-25 Nbl over Lake Absarraca?

It is owned by the State Highway Agency.