US Bridges

County Road 60.5 over Harmony No. 1 Canal

Fair

Logan County, Colorado · 0.4 MI E of CO RD 79 · Structure no. LOG60.5-79.4178

Built
1965
60 years old
Condition
Fair
inspected December 2023
Type
Tee Beam
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
28
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 60.5 over Harmony No. 1 Canal is a prestressed concrete tee beam carrying County Road 60.5 over Harmony No. 1 Canal in Logan County, Colorado. It was built in 1965, so it is 60 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 5 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 28 vehicles a day, roughly 72% of them trucks, projected to reach 35 by 2042. The structure is 43 ft (13 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCounty Road 60.5
CrossesHarmony No. 1 Canal
Location0.4 MI E of CO RD 79
RouteCounty Highway 0
CountyLogan County
StateColorado
Coordinates40.87232, -102.81758
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length43 ft (13 m)
Longest span41 ft (12.4 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28 (2022)
Projected traffic35 by 2042
Trucks72%
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 60.5 over Harmony No. 1 Canal built?

It was built in 1965, making it 60 years old in 2025.

What condition is County Road 60.5 over Harmony No. 1 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 December 2023.

How much traffic does County Road 60.5 over Harmony No. 1 Canal carry?

About 28 vehicles per day (2022 count), of which roughly 72% are trucks.

How long is County Road 60.5 over Harmony No. 1 Canal?

The structure is 43 ft (13 m) long with a longest span of 41 ft (12.4 m) and a deck 24 ft wide.

Who owns County Road 60.5 over Harmony No. 1 Canal?

It is owned by the County Highway Agency.