US Bridges

County Road 23 over Grand Valley Canal

Fair

Mesa County, Colorado · .9 MI N of RD I · Structure no. MESA-23-I.9

Built
1955
70 years old, rebuilt 1970
Condition
Fair
inspected January 2024
Type
Tee Beam
Concrete
Length
27 ft
1 main span
Daily traffic
1,950
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 23 over Grand Valley Canal is a concrete tee beam carrying County Road 23 over Grand Valley Canal in Mesa County, Colorado. It was built in 1955 and reconstructed in 1970, so it is 70 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 1,950 vehicles a day, roughly 5% of them trucks, projected to reach 2,282 by 2042. The structure is 27 ft (8.1 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road 23
CrossesGrand Valley Canal
Location.9 MI N of RD I
RouteCounty Highway 0
CountyMesa County
StateColorado
Coordinates39.14725, -108.62675
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating24.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length27 ft (8.1 m)
Longest span24 ft (7.2 m)
Deck width33 ft (10 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,950 (2022)
Projected traffic2,282 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 23 over Grand Valley Canal built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1970.

What condition is County Road 23 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 January 2024.

How much traffic does County Road 23 over Grand Valley Canal carry?

About 1,950 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is County Road 23 over Grand Valley Canal?

The structure is 27 ft (8.1 m) long with a longest span of 24 ft (7.2 m) and a deck 33 ft wide.

Who owns County Road 23 over Grand Valley Canal?

It is owned by the County Highway Agency.