US Bridges

Granite Springs RD over Granite Res Causeway

Fair

Laramie County, Wyoming · Curt Gowdy State Park · Structure no. NHR

Built
1985
40 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
22 ft
4 main spans
Daily traffic
284
2024 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Granite Springs RD over Granite Res Causeway is a steel culvert carrying Granite Springs RD over Granite Res Causeway in Laramie County, Wyoming. It was built in 1985, so it is 40 years old, younger 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 284 vehicles a day, roughly 20% of them trucks, projected to reach 398 by 2043. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 13 mi (21 km).

CarriesGranite Springs RD
CrossesGranite Res Causeway
LocationCurt Gowdy State Park
RouteState Lands Road 13103
StateWyoming
Coordinates41.17668, -105.2451
Functional classRural Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating107.1 US tons
Inventory rating95.3 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length22 ft (6.6 m)
Longest span4 ft (1.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic284 (2024)
Projected traffic398 by 2043
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 Granite Springs RD over Granite Res Causeway built?

It was built in 1985, making it 40 years old in 2025.

What condition is Granite Springs RD over Granite Res Causeway 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 October 2024.

How much traffic does Granite Springs RD over Granite Res Causeway carry?

About 284 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is Granite Springs RD over Granite Res Causeway?

The structure is 22 ft (6.6 m) long with a longest span of 4 ft (1.2 m).

Who owns Granite Springs RD over Granite Res Causeway?

It is owned by the State Park, Forest, or Reservation Agency.