US Bridges

County Road R over N. Fork Arikaree River

Poor

Washington County, Colorado · 0.25 Mi. N. of Co. Rd. 0 · Structure no. WTNR-00.25-A

Built
1995
30 years old
Condition
Poor
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
46 ft
1 main span
Daily traffic
10
2023 count
Owner
County
County Highway Agency

About this bridge

County Road R over N. Fork Arikaree River is a steel stringer/multi-beam or girder carrying County Road R over N. Fork Arikaree River in Washington County, Colorado. It was built in 1995, so it is 30 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 10 vehicles a day, roughly 27% of them trucks, projected to reach 12 by 2042. The structure is 46 ft (14.1 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCounty Road R
CrossesN. Fork Arikaree River
Location0.25 Mi. N. of Co. Rd. 0
RouteCounty Highway 0
Coordinates39.56897, -103.42525
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than 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

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length46 ft (14.1 m)
Longest span41 ft (12.6 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic12 by 2042
Trucks27%
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 Road R over N. Fork Arikaree River built?

It was built in 1995, making it 30 years old in 2025.

What condition is County Road R over N. Fork Arikaree River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does County Road R over N. Fork Arikaree River carry?

About 10 vehicles per day (2023 count), of which roughly 27% are trucks.

How long is County Road R over N. Fork Arikaree River?

The structure is 46 ft (14.1 m) long with a longest span of 41 ft (12.6 m) and a deck 34 ft wide.

Who owns County Road R over N. Fork Arikaree River?

It is owned by the County Highway Agency.