US Bridges

County Road 31 over Pierce Lateral Canal

Fair

Weld County, Colorado · 0.1 MI N of CO RD 88.75 · Structure no. WEL031.0-088.7A

Built
1989
36 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
108
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 31 over Pierce Lateral Canal is a steel stringer/multi-beam or girder carrying County Road 31 over Pierce Lateral Canal in Weld County, Colorado. It was built in 1989, so it is 36 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 108 vehicles a day, roughly 38% of them trucks, projected to reach 153 by 2042. The structure is 26 ft (8 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road 31
CrossesPierce Lateral Canal
Location0.1 MI N of CO RD 88.75
RouteCounty Highway 0
CountyWeld County
StateColorado
Coordinates40.63694, -104.77305
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.4 US tons
Inventory rating41.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length26 ft (8 m)
Longest span24 ft (7.2 m)
Deck width32 ft (9.7 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic108 (2023)
Projected traffic153 by 2042
Trucks38%
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 Pierce Lateral Canal built?

It was built in 1989, making it 36 years old in 2025.

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

About 108 vehicles per day (2023 count), of which roughly 38% are trucks.

How long is County Road 31 over Pierce Lateral Canal?

The structure is 26 ft (8 m) long with a longest span of 24 ft (7.2 m) and a deck 32 ft wide.

Who owns County Road 31 over Pierce Lateral Canal?

It is owned by the County Highway Agency.