US Bridges

CO RD 317 over East River

Fair

Gunnison County, Colorado · 5.7 MI N of Crested Butte · Structure no. GUN317-07.00A

Built
1994
31 years old
Condition
Fair
inspected June 2024
Type
Slab
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
447
2022 count
Owner
County
County Highway Agency

About this bridge

CO RD 317 over East River is a prestressed concrete slab carrying CO RD 317 over East River in Gunnison County, Colorado. It was built in 1994, so it is 31 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 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 447 vehicles a day, roughly 2% of them trucks, projected to reach 518 by 2042. The structure is 48 ft (14.5 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesCO RD 317
CrossesEast River
Location5.7 MI N of Crested Butte
RouteCounty Highway 0
CountyGunnison County
StateColorado
Coordinates38.95225, -106.98933
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment6: Equal to present minimum criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length48 ft (14.5 m)
Longest span44 ft (13.3 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic447 (2022)
Projected traffic518 by 2042
Trucks2%
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 CO RD 317 over East River built?

It was built in 1994, making it 31 years old in 2025.

What condition is CO RD 317 over East River 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 June 2024.

How much traffic does CO RD 317 over East River carry?

About 447 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is CO RD 317 over East River?

The structure is 48 ft (14.5 m) long with a longest span of 44 ft (13.3 m) and a deck 29 ft wide.

Who owns CO RD 317 over East River?

It is owned by the County Highway Agency.