US Bridges

I-25 Sbl over Middle Bear Creek

Fair

Platte County, Wyoming · Wheatland - Glendo · Structure no. AFC

Built
1961
64 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
3,379
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over Middle Bear Creek is a prestressed concrete stringer/multi-beam or girder carrying I-25 Sbl over Middle Bear Creek in Platte County, Wyoming. It was built in 1961, so it is 64 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 3,379 vehicles a day, roughly 26% of them trucks, projected to reach 4,731 by 2043. The structure is 120 ft (36.7 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-25 Sbl
CrossesMiddle Bear Creek
LocationWheatland - Glendo
RouteInterstate 25
StateWyoming
Coordinates42.39519, -105.04439
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating105.2 US tons
Inventory rating63.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length120 ft (36.7 m)
Longest span38 ft (11.6 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,379 (2024)
Projected traffic4,731 by 2043
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-25 Sbl over Middle Bear Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is I-25 Sbl over Middle Bear 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 March 2023.

How much traffic does I-25 Sbl over Middle Bear Creek carry?

About 3,379 vehicles per day (2024 count), of which roughly 26% are trucks.

How long is I-25 Sbl over Middle Bear Creek?

The structure is 120 ft (36.7 m) long with a longest span of 38 ft (11.6 m) and a deck 41 ft wide.

Who owns I-25 Sbl over Middle Bear Creek?

It is owned by the State Highway Agency.