US Bridges

12th Street over Grand Valley Canal

Fair

Mesa County, Colorado · 1 Blk N of Bookcliff Ave · Structure no. GRJ-27-E.8

Built
1975
50 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
44 ft
2 main spans
Daily traffic
15,465
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

12th Street over Grand Valley Canal is a concrete culvert carrying 12th Street over Grand Valley Canal in Mesa County, Colorado. It was built in 1975, so it is 50 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 15,465 vehicles a day, roughly 7% of them trucks, projected to reach 18,094 by 2042. The structure is 44 ft (13.3 m) long and 82 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries12th Street
CrossesGrand Valley Canal
Location1 Blk N of Bookcliff Ave
RouteCity Street 0
Coordinates39.08914, -108.55236
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating68.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length44 ft (13.3 m)
Longest span21 ft (6.4 m)
Deck width82 ft (25.1 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,465 (2022)
Projected traffic18,094 by 2042
Trucks7%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 12th Street over Grand Valley Canal built?

It was built in 1975, making it 50 years old in 2025.

What condition is 12th Street 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 12th Street over Grand Valley Canal carry?

About 15,465 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is 12th Street over Grand Valley Canal?

The structure is 44 ft (13.3 m) long with a longest span of 21 ft (6.4 m) and a deck 82 ft wide.

Who owns 12th Street over Grand Valley Canal?

It is owned by the City or Municipal Highway Agency.