US Bridges

Unnamed Road over I-25

Fair

Converse County, Wyoming · Douglas - Casper · Structure no. AHN

Built
1966
59 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
295 ft
3 main spans
Daily traffic
138
2024 count
Owner
State
State Highway Agency

About this bridge

Unnamed Road over I-25 is a steel continuous stringer/multi-beam or girder carrying Unnamed Road over I-25 in Converse County, Wyoming. It was built in 1966, so it is 59 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 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 138 vehicles a day, roughly 11% of them trucks, projected to reach 193 by 2043. The structure is 295 ft (89.9 m) long and 23 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesUnnamed Road
CrossesI-25
LocationDouglas - Casper
RouteCounty Highway 0
CountyConverse County
StateWyoming
Coordinates42.84024, -106.06414
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length295 ft (89.9 m)
Longest span97 ft (29.6 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic138 (2024)
Projected traffic193 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

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$13,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Unnamed Road over I-25 built?

It was built in 1966, making it 59 years old in 2025.

What condition is Unnamed Road over I-25 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 2024.

How much traffic does Unnamed Road over I-25 carry?

About 138 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Unnamed Road over I-25?

The structure is 295 ft (89.9 m) long with a longest span of 97 ft (29.6 m) and a deck 23 ft wide.

Who owns Unnamed Road over I-25?

It is owned by the State Highway Agency.