US Bridges

Cimarron River Rd. over Cimarron Ditch Canal

Fair

Gunnison County, Colorado · 32 MI SE of Montrose · Structure no. 020406000001106

Built
1986
39 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
156
2008 count
Owner
Federal
U.S. Forest Service

About this bridge

Cimarron River Rd. over Cimarron Ditch Canal is a prestressed concrete box beam or girders - multiple carrying Cimarron River Rd. over Cimarron Ditch Canal in Gunnison County, Colorado. It was built in 1986, so it is 39 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 156 vehicles a day, roughly 8% of them trucks, projected to reach 234 by 2045. The structure is 29 ft (8.7 m) long and 26 ft wide. If it were closed, the detour would be 59.7 mi (96 km).

CarriesCimarron River Rd.
CrossesCimarron Ditch Canal
Location32 MI SE of Montrose
RouteFederal Lands Road 858.1
Coordinates38.26944, -107.54425
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating42.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length29 ft (8.7 m)
Longest span26 ft (7.8 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic156 (2008)
Projected traffic234 by 2045
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed59.7 mi (96 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Cimarron River Rd. over Cimarron Ditch Canal built?

It was built in 1986, making it 39 years old in 2025.

What condition is Cimarron River Rd. over Cimarron Ditch Canal 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 August 2024.

How much traffic does Cimarron River Rd. over Cimarron Ditch Canal carry?

About 156 vehicles per day (2008 count), of which roughly 8% are trucks.

How long is Cimarron River Rd. over Cimarron Ditch Canal?

The structure is 29 ft (8.7 m) long with a longest span of 26 ft (7.8 m) and a deck 26 ft wide.

Who owns Cimarron River Rd. over Cimarron Ditch Canal?

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