US Bridges

07 S 08 W 32.00: over North Fork Siletz River

Good

Polk County, Oregon · 4.5 Miles W of Valsetz O · Structure no. 0000000L1439387

Built
1997
28 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
10
2022 count
Owner
Federal
Bureau of Land Management

About this bridge

07 S 08 W 32.00: over North Fork Siletz River is a prestressed concrete stringer/multi-beam or girder carrying 07 S 08 W 32.00: over North Fork Siletz River in Polk County, Oregon. It was built in 1997, so it is 28 years old, younger 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 10 vehicles a day, roughly 10% of them trucks, projected to reach 15 by 2042. The structure is 101 ft (30.9 m) long and 20 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Carries07 S 08 W 32.00:
CrossesNorth Fork Siletz River
Location4.5 Miles W of Valsetz O
RouteFederal Lands Road 0
StateOregon
Coordinates44.92306, -123.69833
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 protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating40.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length101 ft (30.9 m)
Longest span100 ft (30.5 m)
Deck width20 ft (6.1 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic15 by 2042
Trucks10%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Land Management
Maintained byBureau of Land Management
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost$2,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 07 S 08 W 32.00: over North Fork Siletz River built?

It was built in 1997, making it 28 years old in 2025.

What condition is 07 S 08 W 32.00: over North Fork Siletz 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 December 2024.

How much traffic does 07 S 08 W 32.00: over North Fork Siletz River carry?

About 10 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is 07 S 08 W 32.00: over North Fork Siletz River?

The structure is 101 ft (30.9 m) long with a longest span of 100 ft (30.5 m) and a deck 20 ft wide.

Who owns 07 S 08 W 32.00: over North Fork Siletz River?

It is owned by the Bureau of Land Management.