US Bridges

County Road 71 over N. Sterling Outlet Canal

Good

Logan County, Colorado · 0.7 MI N of CO RD 66 · Structure no. LOG71-66.7-195A

Built
1993
32 years old
Condition
Good
inspected December 2023
Type
Tee Beam
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
99
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 71 over N. Sterling Outlet Canal is a prestressed concrete tee beam carrying County Road 71 over N. Sterling Outlet Canal in Logan County, Colorado. It was built in 1993, so it is 32 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 99 vehicles a day, roughly 33% of them trucks, projected to reach 122 by 2042. The structure is 60 ft (18.3 m) long and 34 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesCounty Road 71
CrossesN. Sterling Outlet Canal
Location0.7 MI N of CO RD 66
RouteCounty Highway 0
CountyLogan County
StateColorado
Coordinates40.91777, -102.90414
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.2 US tons
Inventory rating37.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span54 ft (16.4 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (2022)
Projected traffic122 by 2042
Trucks33%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 71 over N. Sterling Outlet Canal built?

It was built in 1993, making it 32 years old in 2025.

What condition is County Road 71 over N. Sterling Outlet Canal 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 December 2023.

How much traffic does County Road 71 over N. Sterling Outlet Canal carry?

About 99 vehicles per day (2022 count), of which roughly 33% are trucks.

How long is County Road 71 over N. Sterling Outlet Canal?

The structure is 60 ft (18.3 m) long with a longest span of 54 ft (16.4 m) and a deck 34 ft wide.

Who owns County Road 71 over N. Sterling Outlet Canal?

It is owned by the County Highway Agency.