US Bridges

I-90 / US 87 Bus over French Creek

Fair

Johnson County, Wyoming · Buffalo Main Street · Structure no. AXY

Built
1955
70 years old
Condition
Fair
inspected May 2024
Type
Frame
Concrete
Length
55 ft
1 main span
Daily traffic
1,441
2024 count
Owner
State
State Highway Agency

About this bridge

I-90 / US 87 Bus over French Creek is a concrete frame carrying I-90 / US 87 Bus over French Creek in Johnson County, Wyoming. It was built in 1955, so it is 70 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 1,441 vehicles a day, roughly 4% of them trucks, projected to reach 2,017 by 2043. The structure is 55 ft (16.8 m) long and 83 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-90 / US 87 Bus
CrossesFrench Creek
LocationBuffalo Main Street
RouteInterstate 59
StateWyoming
Coordinates44.36434, -106.69682
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 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
Deck geometry9: Superior to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.9 US tons
Inventory rating41.8 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span50 ft (15.2 m)
Deck width83 ft (25.2 m)
Roadway width74 ft (22.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,441 (2024)
Projected traffic2,017 by 2043
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-90 / US 87 Bus over French Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is I-90 / US 87 Bus 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-90 / US 87 Bus over French Creek carry?

About 1,441 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is I-90 / US 87 Bus over French Creek?

The structure is 55 ft (16.8 m) long with a longest span of 50 ft (15.2 m) and a deck 83 ft wide.

Who owns I-90 / US 87 Bus over French Creek?

It is owned by the State Highway Agency.