US Bridges

County Road 129 over South Pawnee Creek

Fair

Weld County, Colorado · 2.6 MI N of CO RD 88 · Structure no. WEL129.0-092.0A

Built
1983
42 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
398
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 129 over South Pawnee Creek is a prestressed concrete tee beam carrying County Road 129 over South Pawnee Creek in Weld County, Colorado. It was built in 1983, so it is 42 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 398 vehicles a day, roughly 56% of them trucks, projected to reach 565 by 2043. The structure is 67 ft (20.4 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Road 129
CrossesSouth Pawnee Creek
Location2.6 MI N of CO RD 88
RouteCounty Highway 0
CountyWeld County
StateColorado
Coordinates40.663, -103.84
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length67 ft (20.4 m)
Longest span62 ft (18.8 m)
Deck width32 ft (9.7 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic398 (2023)
Projected traffic565 by 2043
Trucks56%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 129 over South Pawnee Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is County Road 129 over South Pawnee Creek 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 May 2024.

How much traffic does County Road 129 over South Pawnee Creek carry?

About 398 vehicles per day (2023 count), of which roughly 56% are trucks.

How long is County Road 129 over South Pawnee Creek?

The structure is 67 ft (20.4 m) long with a longest span of 62 ft (18.8 m) and a deck 32 ft wide.

Who owns County Road 129 over South Pawnee Creek?

It is owned by the County Highway Agency.