US Bridges

I-25 Nbl over US 85

Poor

Laramie County, Wyoming · Cheyenne - Chugwater · Structure no. ABQ

Built
1957
68 years old
Condition
Poor
inspected March 2024
Type
Tee Beam
Concrete Continuous
Length
241 ft
3 main spans
Daily traffic
6,108
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl over US 85 is a concrete continuous tee beam carrying I-25 Nbl over US 85 in Laramie County, Wyoming. It was built in 1957, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,108 vehicles a day, roughly 18% of them trucks, projected to reach 8,551 by 2043. The structure is 241 ft (73.6 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-25 Nbl
CrossesUS 85
LocationCheyenne - Chugwater
RouteInterstate 25
CountyLaramie County
StateWyoming
Coordinates41.23258, -104.83764
Functional classRural Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, 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.
Last inspectionMarch 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating47.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length241 ft (73.6 m)
Longest span90 ft (27.4 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,108 (2024)
Projected traffic8,551 by 2043
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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 US 85 built?

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

What condition is I-25 Nbl over US 85 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does I-25 Nbl over US 85 carry?

About 6,108 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is I-25 Nbl over US 85?

The structure is 241 ft (73.6 m) long with a longest span of 90 ft (27.4 m) and a deck 35 ft wide.

Who owns I-25 Nbl over US 85?

It is owned by the State Highway Agency.