US Bridges

County Road 47 over Williams Fork River

Fair

Moffat County, Colorado · Just W of ST HWY 13 MP 78 · Structure no. MOF47-00.12

Built
1988
37 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
42 ft
1 main span
Daily traffic
23
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 47 over Williams Fork River is a steel stringer/multi-beam or girder carrying County Road 47 over Williams Fork River in Moffat 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 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. Its operating status is: open, posting recommended but not legally implemented.

It carries about 23 vehicles a day, roughly 21% of them trucks, projected to reach 27 by 2042. The structure is 42 ft (12.9 m) long and 25 ft wide. If it were closed, the detour would be 100 mi (161 km).

CarriesCounty Road 47
CrossesWilliams Fork River
LocationJust W of ST HWY 13 MP 78
RouteCounty Highway 0
Coordinates40.3951, -107.63657
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20.3 US tons
Inventory rating12.2 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length42 ft (12.9 m)
Longest span40 ft (12.3 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23 (2023)
Projected traffic27 by 2042
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 47 over Williams Fork River built?

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

What condition is County Road 47 over Williams Fork 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 2023.

How much traffic does County Road 47 over Williams Fork River carry?

About 23 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is County Road 47 over Williams Fork River?

The structure is 42 ft (12.9 m) long with a longest span of 40 ft (12.3 m) and a deck 25 ft wide.

Who owns County Road 47 over Williams Fork River?

It is owned by the County Highway Agency.