US Bridges

Forest Road 30460 over Hoback River

Poor

Teton County, Wyoming · 20 Mi. Se. of Jackson Wy · Structure no. 040304000001052

Built
1965
60 years old
Condition
Poor
inspected August 2024
Type
Girder and Floorbeam System
Steel
Length
110 ft
2 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Forest Road 30460 over Hoback River is a steel girder and floorbeam system carrying Forest Road 30460 over Hoback River in Teton County, Wyoming. It was built in 1965, so it is 60 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 3 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 110 ft (33.5 m) long and 16 ft wide.

Location

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CarriesForest Road 30460
CrossesHoback River
Location20 Mi. Se. of Jackson Wy
RouteFederal Lands Road 30460
CountyTeton County
StateWyoming
Coordinates43.28803, -110.65207
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating21.4 US tons
Inventory rating16.4 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckWood or timber
Main spans2
Design loadH 20
Structure length110 ft (33.5 m)
Longest span54 ft (16.6 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 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$252,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Forest Road 30460 over Hoback River built?

It was built in 1965, making it 60 years old in 2025.

What condition is Forest Road 30460 over Hoback River 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 August 2024.

How much traffic does Forest Road 30460 over Hoback River carry?

About 50 vehicles per day (latest count).

How long is Forest Road 30460 over Hoback River?

The structure is 110 ft (33.5 m) long with a longest span of 54 ft (16.6 m) and a deck 16 ft wide.

Who owns Forest Road 30460 over Hoback River?

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