US Bridges

County Road 64 over Hinman Creek

Good

Routt County, Colorado · 5.0 MI NE of CO RD 129 · Structure no. 107006405.0092

Built
1980
45 years old
Condition
Good
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
324
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 64 over Hinman Creek is a prestressed concrete tee beam carrying County Road 64 over Hinman Creek in Routt County, Colorado. It was built in 1980, so it is 45 years old, older 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 324 vehicles a day, roughly 18% of them trucks, projected to reach 385 by 2042. The structure is 28 ft (8.5 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCounty Road 64
CrossesHinman Creek
Location5.0 MI NE of CO RD 129
RouteCounty Highway 0
Coordinates40.75109, -106.83864
Functional classRural Minor Collector

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating96.3 US tons
Inventory rating57.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span23 ft (7.1 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic324 (2023)
Projected traffic385 by 2042
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 64 over Hinman Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is County Road 64 over Hinman Creek 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 October 2024.

How much traffic does County Road 64 over Hinman Creek carry?

About 324 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is County Road 64 over Hinman Creek?

The structure is 28 ft (8.5 m) long with a longest span of 23 ft (7.1 m) and a deck 25 ft wide.

Who owns County Road 64 over Hinman Creek?

It is owned by the County Highway Agency.