US Bridges

County Road 20 over Pawnee Ditch

Good

Logan County, Colorado · 0.7 MI E of CO RD 29 · Structure no. LOG20-29.7-40A

Built
2011
14 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete
Length
27 ft
1 main span
Daily traffic
33
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 20 over Pawnee Ditch is a concrete culvert carrying County Road 20 over Pawnee Ditch in Logan County, Colorado. It was built in 2011, so it is 14 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 33 vehicles a day, roughly 35% of them trucks, projected to reach 41 by 2042. The structure is 27 ft (8.3 m) long and 44 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCounty Road 20
CrossesPawnee Ditch
Location0.7 MI E of CO RD 29
RouteCounty Highway 0
CountyLogan County
StateColorado
Coordinates40.56564, -103.30189
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length27 ft (8.3 m)
Longest span27 ft (8.3 m)
Deck width44 ft (13.5 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33 (2023)
Projected traffic41 by 2042
Trucks35%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 over Pawnee Ditch built?

It was built in 2011, making it 14 years old in 2025.

What condition is County Road 20 over Pawnee Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does County Road 20 over Pawnee Ditch carry?

About 33 vehicles per day (2023 count), of which roughly 35% are trucks.

How long is County Road 20 over Pawnee Ditch?

The structure is 27 ft (8.3 m) long with a longest span of 27 ft (8.3 m) and a deck 44 ft wide.

Who owns County Road 20 over Pawnee Ditch?

It is owned by the County Highway Agency.