US Bridges

I-25 Nbl over UPRR

Fair

Laramie County, Wyoming · Colorado Line - Cheyenne · Structure no. AAI

Built
1964
61 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
147 ft
3 main spans
Daily traffic
9,282
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl over UPRR is a steel stringer/multi-beam or girder carrying I-25 Nbl over UPRR in Laramie County, Wyoming. It was built in 1964, so it is 61 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 9,282 vehicles a day, roughly 19% of them trucks, projected to reach 12,995 by 2043. The structure is 147 ft (44.9 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-25 Nbl
CrossesUPRR
LocationColorado Line - Cheyenne
RouteInterstate 25
CountyLaramie County
StateWyoming
Coordinates41.0438, -104.89157
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.7 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length147 ft (44.9 m)
Longest span55 ft (16.8 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,282 (2024)
Projected traffic12,995 by 2043
Trucks19%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-25 Nbl over UPRR built?

It was built in 1964, making it 61 years old in 2025.

What condition is I-25 Nbl over UPRR 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 February 2025.

How much traffic does I-25 Nbl over UPRR carry?

About 9,282 vehicles per day (2024 count), of which roughly 19% are trucks.

How long is I-25 Nbl over UPRR?

The structure is 147 ft (44.9 m) long with a longest span of 55 ft (16.8 m) and a deck 41 ft wide.

Who owns I-25 Nbl over UPRR?

It is owned by the State Highway Agency.