US Bridges

County Road 25 over N. Sterling Inlet Canal

Fair

Logan County, Colorado · 1.1 MI N of CO RD 20.5 · Structure no. LOG25-22.6-45

Built
1969
56 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
390
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 25 over N. Sterling Inlet Canal is a prestressed concrete tee beam carrying County Road 25 over N. Sterling Inlet Canal in Logan County, Colorado. It was built in 1969, so it is 56 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 390 vehicles a day, roughly 38% of them trucks, projected to reach 479 by 2042. The structure is 40 ft (12.3 m) long and 41 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty Road 25
CrossesN. Sterling Inlet Canal
Location1.1 MI N of CO RD 20.5
RouteCounty Highway 0
CountyLogan County
StateColorado
Coordinates40.5898, -103.35344
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length40 ft (12.3 m)
Longest span38 ft (11.7 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic390 (2023)
Projected traffic479 by 2042
Trucks38%
Lanes on structure3
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 25 over N. Sterling Inlet Canal built?

It was built in 1969, making it 56 years old in 2025.

What condition is County Road 25 over N. Sterling Inlet 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 County Road 25 over N. Sterling Inlet Canal carry?

About 390 vehicles per day (2023 count), of which roughly 38% are trucks.

How long is County Road 25 over N. Sterling Inlet Canal?

The structure is 40 ft (12.3 m) long with a longest span of 38 ft (11.7 m) and a deck 41 ft wide.

Who owns County Road 25 over N. Sterling Inlet Canal?

It is owned by the County Highway Agency.