US Bridges

County Road 31 over Grand Valley Canal

Fair

Mesa County, Colorado · .2 MI N of RD E · Structure no. MESA-31-E.2

Built
1949
76 years old, rebuilt 1990
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
19
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 31 over Grand Valley Canal is a steel stringer/multi-beam or girder carrying County Road 31 over Grand Valley Canal in Mesa County, Colorado. It was built in 1949 and reconstructed in 1990, so it is 76 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 5 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 19 vehicles a day, projected to reach 22 by 2042. The structure is 34 ft (10.4 m) long and 18 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesCounty Road 31
CrossesGrand Valley Canal
Location.2 MI N of RD E
RouteCounty Highway 0
CountyMesa County
StateColorado
Coordinates39.07941, -108.47797
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.3 US tons
Inventory rating27.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span31 ft (9.5 m)
Deck width18 ft (5.6 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19 (2022)
Projected traffic22 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$115,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 31 over Grand Valley Canal built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1990.

What condition is County Road 31 over Grand Valley 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 Grand Valley Canal carry?

About 19 vehicles per day (2022 count).

How long is County Road 31 over Grand Valley Canal?

The structure is 34 ft (10.4 m) long with a longest span of 31 ft (9.5 m) and a deck 18 ft wide.

Who owns County Road 31 over Grand Valley Canal?

It is owned by the County Highway Agency.