US Bridges

County Road S over Dolores River

Fair

Dolores County, Colorado · 6 Miles E of Cahone CO · Structure no. 0405-7102

Built
1945
80 years old, rebuilt 1988
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
200 ft
2 main spans
Daily traffic
50
2006 count
Owner
Federal
Bureau of Reclamation

About this bridge

County Road S over Dolores River is a concrete continuous box beam or girders - single or spread carrying County Road S over Dolores River in Dolores County, Colorado. It was built in 1945 and reconstructed in 1988, so it is 80 years old, older 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 50 vehicles a day, projected to reach 50 by 2035. The structure is 200 ft (61 m) long and 30 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesCounty Road S
CrossesDolores River
Location6 Miles E of Cahone CO
RouteState Highway 0
CountyDolores County
StateColorado
Coordinates37.65005, -108.73679
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating28.2 US tons
Inventory rating21.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length200 ft (61 m)
Longest span125 ft (38.1 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2006)
Projected traffic50 by 2035
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Reclamation
Maintained byBureau of Reclamation
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 County Road S over Dolores River built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 1988.

What condition is County Road S over Dolores River 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 2023.

How much traffic does County Road S over Dolores River carry?

About 50 vehicles per day (2006 count).

How long is County Road S over Dolores River?

The structure is 200 ft (61 m) long with a longest span of 125 ft (38.1 m) and a deck 30 ft wide.

Who owns County Road S over Dolores River?

It is owned by the Bureau of Reclamation.