US Bridges

NFSR 500 over North Mullen Creek

Good

Carbon County, Wyoming · 7.8 Mi. E of French CR Cg · Structure no. 020602000001242

Built
1953
72 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
25 ft
1 main span
Daily traffic
23
2002 count
Owner
Federal
U.S. Forest Service

About this bridge

NFSR 500 over North Mullen Creek is a wood or timber stringer/multi-beam or girder carrying NFSR 500 over North Mullen Creek in Carbon County, Wyoming. It was built in 1953, so it is 72 years old, older than the Wyoming average of 48.4 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 23 vehicles a day, projected to reach 34 by 2045. The structure is 25 ft (7.5 m) long and 15 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesNFSR 500
CrossesNorth Mullen Creek
Location7.8 Mi. E of French CR Cg
RouteFederal Lands Road 500
StateWyoming
Coordinates41.23562, -106.36675
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating31.4 US tons
Inventory rating24.3 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length25 ft (7.5 m)
Longest span23 ft (6.9 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23 (2002)
Projected traffic34 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NFSR 500 over North Mullen Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is NFSR 500 over North Mullen 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 July 2024.

How much traffic does NFSR 500 over North Mullen Creek carry?

About 23 vehicles per day (2002 count).

How long is NFSR 500 over North Mullen Creek?

The structure is 25 ft (7.5 m) long with a longest span of 23 ft (6.9 m) and a deck 15 ft wide.

Who owns NFSR 500 over North Mullen Creek?

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