US Bridges

Yaquina Bay RD over Slough

Good

Lincoln County, Oregon · 065 M West of Toledo · Structure no. 15502A51502 674

Built
1992
33 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
53 ft
1 main span
Daily traffic
832
2020 count
Owner
County
County Highway Agency

About this bridge

Yaquina Bay RD over Slough is a prestressed concrete slab carrying Yaquina Bay RD over Slough in Lincoln County, Oregon. It was built in 1992, so it is 33 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 832 vehicles a day, roughly 10% of them trucks, projected to reach 1,114 by 2040. The structure is 53 ft (16.1 m) long and 32 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

CarriesYaquina Bay RD
CrossesSlough
Location065 M West of Toledo
RouteCounty Highway 0
StateOregon
Coordinates44.58088, -123.99475
Functional classRural Major Collector

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length53 ft (16.1 m)
Longest span52 ft (15.8 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic832 (2020)
Projected traffic1,114 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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 Yaquina Bay RD over Slough built?

It was built in 1992, making it 33 years old in 2025.

What condition is Yaquina Bay RD over Slough 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 September 2024.

How much traffic does Yaquina Bay RD over Slough carry?

About 832 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Yaquina Bay RD over Slough?

The structure is 53 ft (16.1 m) long with a longest span of 52 ft (15.8 m) and a deck 32 ft wide.

Who owns Yaquina Bay RD over Slough?

It is owned by the County Highway Agency.