US Bridges

I-25 Nbl over French Creek

Fair

Johnson County, Wyoming · Buffalo Marginal · Structure no. MWN

Built
1963
62 years old
Condition
Fair
inspected May 2024
Type
Culvert
Steel
Length
29 ft
2 main spans
Daily traffic
2,085
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl over French Creek is a steel culvert carrying I-25 Nbl over French Creek in Johnson County, Wyoming. It was built in 1963, so it is 62 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 2,085 vehicles a day, roughly 23% of them trucks, projected to reach 2,919 by 2043. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesI-25 Nbl
CrossesFrench Creek
LocationBuffalo Marginal
RouteInterstate 25
CountyJohnson County
StateWyoming
Coordinates44.35641, -106.68713
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length29 ft (8.8 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,085 (2024)
Projected traffic2,919 by 2043
Trucks23%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 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 I-25 Nbl over French Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is I-25 Nbl over French Creek 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 May 2024.

How much traffic does I-25 Nbl over French Creek carry?

About 2,085 vehicles per day (2024 count), of which roughly 23% are trucks.

How long is I-25 Nbl over French Creek?

The structure is 29 ft (8.8 m) long with a longest span of 12 ft (3.7 m).

Who owns I-25 Nbl over French Creek?

It is owned by the State Highway Agency.