US Bridges

County Road 360 over Yampa River

Fair

Routt County, Colorado · 0.3 MI W of US HWY 40 · Structure no. 107036000.30761

Built
1998
27 years old
Condition
Fair
inspected October 2024
Type
Arch - Thru
Wood or Timber
Length
114 ft
1 main span
Daily traffic
2,519
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 360 over Yampa River is a wood or timber arch - thru carrying County Road 360 over Yampa River in Routt County, Colorado. It was built in 1998, so it is 27 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 2,519 vehicles a day, roughly 23% of them trucks, projected to reach 2,997 by 2043. The structure is 114 ft (34.7 m) long and 42 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Road 360
CrossesYampa River
Location0.3 MI W of US HWY 40
RouteCounty Highway 0
CountyRoutt County
StateColorado
Coordinates40.45939, -106.82647
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length114 ft (34.7 m)
Longest span110 ft (33.5 m)
Deck width42 ft (12.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck17 ft (5.1 m)

Traffic and service

Average daily traffic2,519 (2023)
Projected traffic2,997 by 2043
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 360 over Yampa River built?

It was built in 1998, making it 27 years old in 2025.

What condition is County Road 360 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 Road 360 over Yampa River carry?

About 2,519 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is County Road 360 over Yampa River?

The structure is 114 ft (34.7 m) long with a longest span of 110 ft (33.5 m) and a deck 42 ft wide.

Who owns County Road 360 over Yampa River?

It is owned by the County Highway Agency.