US Bridges

County Road 23.5 over Grand Valley Canal

Fair

Mesa County, Colorado · .4 MI N of RD I · Structure no. MESA-23.5-I.4A

Built
1992
33 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
53
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 23.5 over Grand Valley Canal is a steel stringer/multi-beam or girder carrying County Road 23.5 over Grand Valley Canal in Mesa County, Colorado. It was built in 1992, so it is 33 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 53 vehicles a day, projected to reach 62 by 2042. The structure is 26 ft (7.9 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCounty Road 23.5
CrossesGrand Valley Canal
Location.4 MI N of RD I
RouteCounty Highway 0
CountyMesa County
StateColorado
Coordinates39.14061, -108.61739
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
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 rating106.6 US tons
Inventory rating63.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span23 ft (6.9 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53 (2022)
Projected traffic62 by 2042
Trucks0%
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 23.5 over Grand Valley Canal built?

It was built in 1992, making it 33 years old in 2025.

What condition is County Road 23.5 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 23.5 over Grand Valley Canal carry?

About 53 vehicles per day (2022 count).

How long is County Road 23.5 over Grand Valley Canal?

The structure is 26 ft (7.9 m) long with a longest span of 23 ft (6.9 m) and a deck 24 ft wide.

Who owns County Road 23.5 over Grand Valley Canal?

It is owned by the County Highway Agency.