US Bridges

County Road 1 over Colorado River

Good

Eagle County, Colorado · 3.6 MI of NE State Bridge · Structure no. EAG-028-03.6A

Built
1988
37 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
170 ft
2 main spans
Daily traffic
513
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 1 over Colorado River is a prestressed concrete continuous stringer/multi-beam or girder carrying County Road 1 over Colorado River in Eagle County, Colorado. It was built in 1988, so it is 37 years old, younger 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 513 vehicles a day, roughly 9% of them trucks, projected to reach 636 by 2040. The structure is 170 ft (51.8 m) long and 31 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesCounty Road 1
CrossesColorado River
Location3.6 MI of NE State Bridge
RouteCounty Highway 0
CountyEagle County
StateColorado
Coordinates39.89069, -106.61692
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating77.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span79 ft (24.2 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic513 (2020)
Projected traffic636 by 2040
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 1 over Colorado River built?

It was built in 1988, making it 37 years old in 2025.

What condition is County Road 1 over Colorado River 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 June 2024.

How much traffic does County Road 1 over Colorado River carry?

About 513 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is County Road 1 over Colorado River?

The structure is 170 ft (51.8 m) long with a longest span of 79 ft (24.2 m) and a deck 31 ft wide.

Who owns County Road 1 over Colorado River?

It is owned by the County Highway Agency.