US Bridges

County Road 31 over Govt. Highline Canal

Fair

Mesa County, Colorado · .7 MI N of RD F · Structure no. MESA-31-F.7

Built
1986
39 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
46 ft
1 main span
Daily traffic
314
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 31 over Govt. Highline Canal is a steel stringer/multi-beam or girder carrying County Road 31 over Govt. Highline Canal in Mesa 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 314 vehicles a day, roughly 2% of them trucks, projected to reach 368 by 2042. The structure is 46 ft (13.9 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCounty Road 31
CrossesGovt. Highline Canal
Location.7 MI N of RD F
RouteCounty Highway 0
CountyMesa County
StateColorado
Coordinates39.10106, -108.478
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating58 US tons
Inventory rating34.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length46 ft (13.9 m)
Longest span42 ft (12.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic314 (2022)
Projected traffic368 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway 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 County Road 31 over Govt. Highline Canal built?

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

What condition is County Road 31 over Govt. Highline 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 February 2024.

How much traffic does County Road 31 over Govt. Highline Canal carry?

About 314 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road 31 over Govt. Highline Canal?

The structure is 46 ft (13.9 m) long with a longest span of 42 ft (12.9 m) and a deck 26 ft wide.

Who owns County Road 31 over Govt. Highline Canal?

It is owned by the County Highway Agency.