US Bridges

Forest Road 30530 over Cliff Creek

Poor

Sublette County, Wyoming · No Data Entered · Structure no. 040302000001068

Built
1974
51 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
41 ft
1 main span
Daily traffic
150
Owner
Federal
U.S. Forest Service

About this bridge

Forest Road 30530 over Cliff Creek is a wood or timber stringer/multi-beam or girder carrying Forest Road 30530 over Cliff Creek in Sublette County, Wyoming. It was built in 1974, so it is 51 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 150 vehicles a day, projected to reach 225 by 2045. The structure is 41 ft (12.5 m) long and 18 ft wide.

Location

Open in Google Maps
CarriesForest Road 30530
CrossesCliff Creek
LocationNo Data Entered
RouteFederal Lands Road 30530
CountySublette County
StateWyoming
Coordinates43.22011, -110.51218
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.3 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 15
Structure length41 ft (12.5 m)
Longest span39 ft (12 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (—)
Projected traffic225 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$94,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Forest Road 30530 over Cliff Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Forest Road 30530 over Cliff Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Forest Road 30530 over Cliff Creek carry?

About 150 vehicles per day (latest count).

How long is Forest Road 30530 over Cliff Creek?

The structure is 41 ft (12.5 m) long with a longest span of 39 ft (12 m) and a deck 18 ft wide.

Who owns Forest Road 30530 over Cliff Creek?

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