US Bridges

NFSR 498 over S. Fork Big Creek

Good

Carbon County, Wyoming · 6.53 MI West of HWY 230 · Structure no. 020602000003077

Built
2002
23 years old
Condition
Good
inspected October 2022
Type
Frame
Concrete
Length
37 ft
1 main span
Daily traffic
25
2018 count
Owner
Federal
U.S. Forest Service

About this bridge

NFSR 498 over S. Fork Big Creek is a concrete frame carrying NFSR 498 over S. Fork Big Creek in Carbon County, Wyoming. It was built in 2002, so it is 23 years old, younger 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 25 vehicles a day, projected to reach 37 by 2045. The structure is 37 ft (11.2 m) long and 35 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesNFSR 498
CrossesS. Fork Big Creek
Location6.53 MI West of HWY 230
RouteFederal Lands Road 498
StateWyoming
Coordinates41.01607, -106.52682
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 protection8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than 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 rating74 US tons
Inventory rating57.1 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length37 ft (11.2 m)
Longest span36 ft (10.9 m)
Deck width35 ft (10.7 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2018)
Projected traffic37 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 498 over S. Fork Big Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is NFSR 498 over S. Fork Big 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 October 2022.

How much traffic does NFSR 498 over S. Fork Big Creek carry?

About 25 vehicles per day (2018 count).

How long is NFSR 498 over S. Fork Big Creek?

The structure is 37 ft (11.2 m) long with a longest span of 36 ft (10.9 m) and a deck 35 ft wide.

Who owns NFSR 498 over S. Fork Big Creek?

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