US Bridges

County Road 89 over Harmony No. 1 Canal

Fair

Logan County, Colorado · 0.4 MI N of CO RD 64.5 · Structure no. LOG89-64.9-231A

Built
1992
33 years old
Condition
Fair
inspected December 2023
Type
Tee Beam
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
14
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 89 over Harmony No. 1 Canal is a prestressed concrete tee beam carrying County Road 89 over Harmony No. 1 Canal in Logan County, Colorado. It was built in 1992, so it is 33 years old, younger 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 14 vehicles a day, roughly 64% of them trucks, projected to reach 17 by 2042. The structure is 40 ft (12.1 m) long and 35 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCounty Road 89
CrossesHarmony No. 1 Canal
Location0.4 MI N of CO RD 64.5
RouteCounty Highway 0
CountyLogan County
StateColorado
Coordinates40.90447, -102.72897
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating72.6 US tons
Inventory rating45 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.1 m)
Longest span36 ft (10.9 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14 (2022)
Projected traffic17 by 2042
Trucks64%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 89 over Harmony No. 1 Canal built?

It was built in 1992, making it 33 years old in 2025.

What condition is County Road 89 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 89 over Harmony No. 1 Canal carry?

About 14 vehicles per day (2022 count), of which roughly 64% are trucks.

How long is County Road 89 over Harmony No. 1 Canal?

The structure is 40 ft (12.1 m) long with a longest span of 36 ft (10.9 m) and a deck 35 ft wide.

Who owns County Road 89 over Harmony No. 1 Canal?

It is owned by the County Highway Agency.