US Bridges

County Road 20.5 over Pawnee Creek

Fair

Logan County, Colorado · 0.1 MI E of CO RD 25 · Structure no. LOG20.5-25.136A

Built
1991
34 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
110 ft
2 main spans
Daily traffic
59
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 20.5 over Pawnee Creek is a prestressed concrete continuous tee beam carrying County Road 20.5 over Pawnee Creek in Logan County, Colorado. It was built in 1991, so it is 34 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 59 vehicles a day, roughly 72% of them trucks, projected to reach 73 by 2042. The structure is 110 ft (33.6 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Road 20.5
CrossesPawnee Creek
Location0.1 MI E of CO RD 25
RouteCounty Highway 0
CountyLogan County
StateColorado
Coordinates40.57319, -103.34947
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckOther
Main spans2
Design loadHS 20
Structure length110 ft (33.6 m)
Longest span51 ft (15.5 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59 (2023)
Projected traffic73 by 2042
Trucks72%
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 20.5 over Pawnee Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is County Road 20.5 over 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 January 2024.

How much traffic does County Road 20.5 over Pawnee Creek carry?

About 59 vehicles per day (2023 count), of which roughly 72% are trucks.

How long is County Road 20.5 over Pawnee Creek?

The structure is 110 ft (33.6 m) long with a longest span of 51 ft (15.5 m) and a deck 35 ft wide.

Who owns County Road 20.5 over Pawnee Creek?

It is owned by the County Highway Agency.