US Bridges

Fdr 520 over Crooked Creek

Fair

Hinsdale County, Colorado · 14.6 MI Wsw of Creede · Structure no. 020904000001036

Built
1984
41 years old, rebuilt 1992
Condition
Fair
inspected July 2023
Type
Tee Beam
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
219
2002 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 520 over Crooked Creek is a prestressed concrete tee beam carrying Fdr 520 over Crooked Creek in Hinsdale County, Colorado. It was built in 1984 and reconstructed in 1992, so it is 41 years old, younger than the Colorado average of 42.2 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 219 vehicles a day, roughly 4% of them trucks, projected to reach 80 by 2012. The structure is 60 ft (18.3 m) long and 27 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesFdr 520
CrossesCrooked Creek
Location14.6 MI Wsw of Creede
RouteFederal Lands Road 520
Coordinates37.78914, -107.18136
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating33.6 US tons
Inventory rating26.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span58 ft (17.7 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic219 (2002)
Projected traffic80 by 2012
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$15,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 520 over Crooked Creek built?

It was built in 1984, making it 41 years old in 2025. It was reconstructed in 1992.

What condition is Fdr 520 over Crooked 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 July 2023.

How much traffic does Fdr 520 over Crooked Creek carry?

About 219 vehicles per day (2002 count), of which roughly 4% are trucks.

How long is Fdr 520 over Crooked Creek?

The structure is 60 ft (18.3 m) long with a longest span of 58 ft (17.7 m) and a deck 27 ft wide.

Who owns Fdr 520 over Crooked Creek?

It is owned by the U.S. Forest Service.