US Bridges

Seeley CR RD over No. Fk. Alsea River

Good

Benton County, Oregon · 0027 MI E of HWY 34 · Structure no. 14448 000

Built
1970
55 years old
Condition
Good
inspected July 2024
Type
Slab
Prestressed Concrete
Length
118 ft
3 main spans
Daily traffic
27
2020 count
Owner
County
County Highway Agency

About this bridge

Seeley CR RD over No. Fk. Alsea River is a prestressed concrete slab carrying Seeley CR RD over No. Fk. Alsea River in Benton County, Oregon. It was built in 1970, so it is 55 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 27 vehicles a day, projected to reach 43 by 2040. The structure is 118 ft (36 m) long and 16 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesSeeley CR RD
CrossesNo. Fk. Alsea River
Location0027 MI E of HWY 34
RouteCounty Highway 0
CountyBenton County
StateOregon
Coordinates44.40955, -123.56761
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length118 ft (36 m)
Longest span42 ft (12.8 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27 (2020)
Projected traffic43 by 2040
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Seeley CR RD over No. Fk. Alsea River built?

It was built in 1970, making it 55 years old in 2025.

What condition is Seeley CR RD over No. Fk. Alsea 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 July 2024.

How much traffic does Seeley CR RD over No. Fk. Alsea River carry?

About 27 vehicles per day (2020 count).

How long is Seeley CR RD over No. Fk. Alsea River?

The structure is 118 ft (36 m) long with a longest span of 42 ft (12.8 m) and a deck 16 ft wide.

Who owns Seeley CR RD over No. Fk. Alsea River?

It is owned by the County Highway Agency.