US Bridges

Wyo 13 over Rock Creek

Fair

Albany County, Wyoming · Rock River - JCT I-80 · Structure no. CIV

Built
1966
59 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
84 ft
3 main spans
Daily traffic
251
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 13 over Rock Creek is a concrete continuous slab carrying Wyo 13 over Rock Creek in Albany 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 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 251 vehicles a day, roughly 12% of them trucks, projected to reach 351 by 2043. The structure is 84 ft (25.6 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesWyo 13
CrossesRock Creek
LocationRock River - JCT I-80
RouteState Highway 13
CountyAlbany County
StateWyoming
Coordinates41.72302, -106.00539
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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.
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 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 rating55 US tons
Inventory rating33 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span35 ft (10.7 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic251 (2024)
Projected traffic351 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$42,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 13 over Rock Creek built?

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

What condition is Wyo 13 over Rock 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 Wyo 13 over Rock Creek carry?

About 251 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Wyo 13 over Rock Creek?

The structure is 84 ft (25.6 m) long with a longest span of 35 ft (10.7 m) and a deck 31 ft wide.

Who owns Wyo 13 over Rock Creek?

It is owned by the State Highway Agency.