US Bridges

Fdr 31 over N Fork Crazy Woman Creek

Fair

Johnson County, Wyoming · 9.5 MI N of HWY 16 · Structure no. 020201000001004

Built
1977
48 years old, rebuilt 1993
Condition
Fair
inspected August 2024
Type
Slab
Wood or Timber
Length
24 ft
1 main span
Daily traffic
25
1993 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 31 over N Fork Crazy Woman Creek is a wood or timber slab carrying Fdr 31 over N Fork Crazy Woman Creek in Johnson County, Wyoming. It was built in 1977 and reconstructed in 1993, so it is 48 years old, younger than the Wyoming average of 48.4 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.

It carries about 25 vehicles a day, projected to reach 37 by 2045. The structure is 24 ft (7.3 m) long and 18 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesFdr 31
CrossesN Fork Crazy Woman Creek
Location9.5 MI N of HWY 16
RouteFederal Lands Road 0
CountyJohnson County
StateWyoming
Coordinates44.15433, -106.97114
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
Deck7 GoodSome minor problems.
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable 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 rating40 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (1993)
Projected traffic37 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 Fdr 31 over N Fork Crazy Woman Creek built?

It was built in 1977, making it 48 years old in 2025. It was reconstructed in 1993.

What condition is Fdr 31 over N Fork Crazy Woman Creek 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 August 2024.

How much traffic does Fdr 31 over N Fork Crazy Woman Creek carry?

About 25 vehicles per day (1993 count).

How long is Fdr 31 over N Fork Crazy Woman Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 18 ft wide.

Who owns Fdr 31 over N Fork Crazy Woman Creek?

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