US Bridges

County Road 33 over N. Sterling Inlet Canal

FairPosted for load

Logan County, Colorado · 0.3 MI N of CO RD 32 · Structure no. LOG33-32.3-67-A

Built
1940
85 years old, rebuilt 1990
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
61
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 33 over N. Sterling Inlet Canal is a steel stringer/multi-beam or girder carrying County Road 33 over N. Sterling Inlet Canal in Logan County, Colorado. It was built in 1940 and reconstructed in 1990, so it is 85 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. Its operating status is: posted for load restriction.

It carries about 61 vehicles a day, roughly 48% of them trucks, projected to reach 75 by 2042. The structure is 36 ft (11.1 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road 33
CrossesN. Sterling Inlet Canal
Location0.3 MI N of CO RD 32
RouteCounty Highway 0
CountyLogan County
StateColorado
Coordinates40.65953, -103.27744
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.8 US tons
Inventory rating17.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length36 ft (11.1 m)
Longest span34 ft (10.3 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61 (2023)
Projected traffic75 by 2042
Trucks48%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 33 over N. Sterling Inlet Canal built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1990.

What condition is County Road 33 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 33 over N. Sterling Inlet Canal carry?

About 61 vehicles per day (2023 count), of which roughly 48% are trucks.

How long is County Road 33 over N. Sterling Inlet Canal?

The structure is 36 ft (11.1 m) long with a longest span of 34 ft (10.3 m) and a deck 29 ft wide.

Who owns County Road 33 over N. Sterling Inlet Canal?

It is owned by the County Highway Agency.