US Bridges

County Road 16.5 over Pawnee Ditch

Good

Logan County, Colorado · 0.1 Mi. E. of Co. Rd. 29 · Structure no. LOG16.5-29.124A

Built
1999
26 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
244
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 16.5 over Pawnee Ditch is a concrete culvert carrying County Road 16.5 over Pawnee Ditch in Logan County, Colorado. It was built in 1999, so it is 26 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 244 vehicles a day, roughly 45% of them trucks, projected to reach 301 by 2042. The structure is 20 ft (6.2 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCounty Road 16.5
CrossesPawnee Ditch
Location0.1 Mi. E. of Co. Rd. 29
RouteCounty Highway 0
CountyLogan County
StateColorado
Coordinates40.54408, -103.30881
Functional classRural Minor Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.8 US tons
Inventory rating34.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.2 m)
Longest span20 ft (6.2 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic244 (2023)
Projected traffic301 by 2042
Trucks45%
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 16.5 over Pawnee Ditch built?

It was built in 1999, making it 26 years old in 2025.

What condition is County Road 16.5 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 16.5 over Pawnee Ditch carry?

About 244 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is County Road 16.5 over Pawnee Ditch?

The structure is 20 ft (6.2 m) long with a longest span of 20 ft (6.2 m) and a deck 34 ft wide.

Who owns County Road 16.5 over Pawnee Ditch?

It is owned by the County Highway Agency.