US Bridges

County RD 179 over Yampa River

Fair

Routt County, Colorado · 0.8 MI S of US HWY 40 · Structure no. 107017900.80903

Built
1984
41 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
213 ft
3 main spans
Daily traffic
614
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 179 over Yampa River is a prestressed concrete tee beam carrying County RD 179 over Yampa River in Routt County, Colorado. It was built in 1984, so it is 41 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 614 vehicles a day, roughly 35% of them trucks, projected to reach 730 by 2042. The structure is 213 ft (64.9 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty RD 179
CrossesYampa River
Location0.8 MI S of US HWY 40
RouteCounty Highway 0
CountyRoutt County
StateColorado
Coordinates40.47776, -107.01243
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length213 ft (64.9 m)
Longest span67 ft (20.4 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic614 (2023)
Projected traffic730 by 2042
Trucks35%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 RD 179 over Yampa River built?

It was built in 1984, making it 41 years old in 2025.

What condition is County RD 179 over Yampa 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 October 2024.

How much traffic does County RD 179 over Yampa River carry?

About 614 vehicles per day (2023 count), of which roughly 35% are trucks.

How long is County RD 179 over Yampa River?

The structure is 213 ft (64.9 m) long with a longest span of 67 ft (20.4 m) and a deck 32 ft wide.

Who owns County RD 179 over Yampa River?

It is owned by the County Highway Agency.