US Bridges

County Road 31 over Collins Lateral Canal

Fair

Weld County, Colorado · 0.1 MI N of CO RD 86 · Structure no. WEL031.0_086.0A

Built
1995
30 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
89
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 31 over Collins Lateral Canal is a steel stringer/multi-beam or girder carrying County Road 31 over Collins Lateral Canal in Weld County, Colorado. It was built in 1995, so it is 30 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 89 vehicles a day, roughly 48% of them trucks, projected to reach 127 by 2042. The structure is 28 ft (8.4 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 31
CrossesCollins Lateral Canal
Location0.1 MI N of CO RD 86
RouteCounty Highway 0
CountyWeld County
StateColorado
Coordinates40.613, -104.773
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.4 US tons
Inventory rating23 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length28 ft (8.4 m)
Longest span25 ft (7.5 m)
Deck width31 ft (9.4 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic89 (2023)
Projected traffic127 by 2042
Trucks48%
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 31 over Collins Lateral Canal built?

It was built in 1995, making it 30 years old in 2025.

What condition is County Road 31 over Collins Lateral 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 Collins Lateral Canal carry?

About 89 vehicles per day (2023 count), of which roughly 48% are trucks.

How long is County Road 31 over Collins Lateral Canal?

The structure is 28 ft (8.4 m) long with a longest span of 25 ft (7.5 m) and a deck 31 ft wide.

Who owns County Road 31 over Collins Lateral Canal?

It is owned by the County Highway Agency.