US Bridges

County Road 76 over Larimer and Weld Canal

Fair

Weld County, Colorado · 0.5 MI E of CO RD 31 · Structure no. WEL076.0-031.0A

Built
1980
45 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
39 ft
1 main span
Daily traffic
79
2021 count
Owner
County
County Highway Agency

About this bridge

County Road 76 over Larimer and Weld Canal is a steel stringer/multi-beam or girder carrying County Road 76 over Larimer and Weld Canal in Weld County, Colorado. It was built in 1980, so it is 45 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 79 vehicles a day, roughly 46% of them trucks, projected to reach 112 by 2041. The structure is 39 ft (12 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road 76
CrossesLarimer and Weld Canal
Location0.5 MI E of CO RD 31
RouteCounty Highway 0
CountyWeld County
StateColorado
Coordinates40.539, -104.765
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.2 US tons
Inventory rating31.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length39 ft (12 m)
Longest span36 ft (11 m)
Deck width31 ft (9.6 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79 (2021)
Projected traffic112 by 2041
Trucks46%
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 76 over Larimer and Weld Canal built?

It was built in 1980, making it 45 years old in 2025.

What condition is County Road 76 over Larimer and Weld 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 March 2024.

How much traffic does County Road 76 over Larimer and Weld Canal carry?

About 79 vehicles per day (2021 count), of which roughly 46% are trucks.

How long is County Road 76 over Larimer and Weld Canal?

The structure is 39 ft (12 m) long with a longest span of 36 ft (11 m) and a deck 31 ft wide.

Who owns County Road 76 over Larimer and Weld Canal?

It is owned by the County Highway Agency.