US Bridges

Road over Williamson River

Good

Klamath County, Oregon · (orig.# 3149 - 9.0) · Structure no. 062002000001028

Built
1966
59 years old, rebuilt 2002
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
80 ft
1 main span
Daily traffic
24
Owner
Federal
U.S. Forest Service

About this bridge

Road over Williamson River is a wood or timber stringer/multi-beam or girder carrying Road over Williamson River in Klamath County, Oregon. It was built in 1966 and reconstructed in 2002, so it is 59 years old, older than the Oregon average of 49.9 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 24 vehicles a day, projected to reach 36 by 2045. The structure is 80 ft (24.4 m) long and 29 ft wide. If it were closed, the detour would be 23.6 mi (38 km).

CarriesRoad
CrossesWilliamson River
Location(orig.# 3149 - 9.0)
RouteFederal Lands Road 49000
StateOregon
Coordinates42.91125, -121.47483
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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.1 US tons
Inventory rating34.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1 (+2 approach)
Design loadOther
Structure length80 ft (24.4 m)
Longest span51 ft (15.5 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (—)
Projected traffic36 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23.6 mi (38 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Road over Williamson River built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2002.

What condition is Road over Williamson River 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 August 2023.

How much traffic does Road over Williamson River carry?

About 24 vehicles per day (latest count).

How long is Road over Williamson River?

The structure is 80 ft (24.4 m) long with a longest span of 51 ft (15.5 m) and a deck 29 ft wide.

Who owns Road over Williamson River?

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