US Bridges

US 6 Ml over Pawnee Canal

Fair

Logan County, Colorado · 18.2 MI No of JCT I-76 · Structure no. C-23-N

Built
1966
59 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
89 ft
1 main span
Daily traffic
1,000
2020 count
Owner
State
State Highway Agency

About this bridge

US 6 Ml over Pawnee Canal is a prestressed concrete stringer/multi-beam or girder carrying US 6 Ml over Pawnee Canal in Logan County, Colorado. It was built in 1966, so it is 59 years old, older 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 1,000 vehicles a day, roughly 17% of them trucks, projected to reach 1,250 by 2040. The structure is 89 ft (27.1 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS 6 Ml
CrossesPawnee Canal
Location18.2 MI No of JCT I-76
RouteU.S. Route 6J
Coordinates40.46075, -103.37881
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.5 US tons
Inventory rating24.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length89 ft (27.1 m)
Longest span86 ft (26.1 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2020)
Projected traffic1,250 by 2040
Trucks17%
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

OwnerState Highway Agency
Maintained byState 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 US 6 Ml over Pawnee Canal built?

It was built in 1966, making it 59 years old in 2025.

What condition is US 6 Ml over Pawnee 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 January 2024.

How much traffic does US 6 Ml over Pawnee Canal carry?

About 1,000 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is US 6 Ml over Pawnee Canal?

The structure is 89 ft (27.1 m) long with a longest span of 86 ft (26.1 m) and a deck 35 ft wide.

Who owns US 6 Ml over Pawnee Canal?

It is owned by the State Highway Agency.