US Bridges

Fdr 631 over Williams Creek

Good

Hinsdale County, Colorado · 19.6 MI on Fdr 631 · Structure no. 021306000001170

Built
1991
34 years old
Condition
Good
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
408
2003 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 631 over Williams Creek is a prestressed concrete tee beam carrying Fdr 631 over Williams Creek in Hinsdale County, Colorado. It was built in 1991, so it is 34 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 408 vehicles a day, roughly 20% of them trucks, projected to reach 416 by 2013. The structure is 54 ft (16.5 m) long and 28 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesFdr 631
CrossesWilliams Creek
Location19.6 MI on Fdr 631
RouteFederal Lands Road 631
Coordinates37.46171, -107.19852
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating22 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span52 ft (15.8 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic408 (2003)
Projected traffic416 by 2013
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$26,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 631 over Williams Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Fdr 631 over Williams Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does Fdr 631 over Williams Creek carry?

About 408 vehicles per day (2003 count), of which roughly 20% are trucks.

How long is Fdr 631 over Williams Creek?

The structure is 54 ft (16.5 m) long with a longest span of 52 ft (15.8 m) and a deck 28 ft wide.

Who owns Fdr 631 over Williams Creek?

It is owned by the U.S. Forest Service.