US Bridges

15th Street over Spring Creek

Fair

Albany County, Wyoming · 15th Street in Laramie · Structure no. EOB

Built
1960
65 years old, rebuilt 1983
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
6,065
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

15th Street over Spring Creek is a concrete continuous culvert carrying 15th Street over Spring Creek in Albany County, Wyoming. It was built in 1960 and reconstructed in 1983, so it is 65 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 6,065 vehicles a day, roughly 6% of them trucks, projected to reach 8,491 by 2043. The structure is 34 ft (10.4 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries15th Street
CrossesSpring Creek
Location15th Street in Laramie
RouteCity Street 15
StateWyoming
Coordinates41.30263, -105.57859
Functional classUrban 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
Channel and channel protection8 Very GoodNo problems noted.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span14 ft (4.3 m)
Deck width63 ft (19.2 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,065 (2024)
Projected traffic8,491 by 2043
Trucks6%
Lanes on structure2
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$3,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 15th Street over Spring Creek built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1983.

What condition is 15th Street over Spring 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 November 2024.

How much traffic does 15th Street over Spring Creek carry?

About 6,065 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is 15th Street over Spring Creek?

The structure is 34 ft (10.4 m) long with a longest span of 14 ft (4.3 m) and a deck 63 ft wide.

Who owns 15th Street over Spring Creek?

It is owned by the City or Municipal Highway Agency.