US Bridges

Gowdyville Road over S Fork Siuslaw River

Fair

Lane County, Oregon · 060 MI W Cottage Grove · Structure no. 39C248264500606

Built
1980
45 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
535
2020 count
Owner
County
County Highway Agency

About this bridge

Gowdyville Road over S Fork Siuslaw River is a prestressed concrete slab carrying Gowdyville Road over S Fork Siuslaw River in Lane County, Oregon. It was built in 1980, so it is 45 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 535 vehicles a day, roughly 10% of them trucks, projected to reach 625 by 2025. The structure is 44 ft (13.4 m) long and 28 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesGowdyville Road
CrossesS Fork Siuslaw River
Location060 MI W Cottage Grove
RouteCounty Highway C2645
StateOregon
Coordinates43.78251, -123.17922
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span43 ft (13.1 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic535 (2020)
Projected traffic625 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 Gowdyville Road over S Fork Siuslaw River built?

It was built in 1980, making it 45 years old in 2025.

What condition is Gowdyville Road over S Fork Siuslaw River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does Gowdyville Road over S Fork Siuslaw River carry?

About 535 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Gowdyville Road over S Fork Siuslaw River?

The structure is 44 ft (13.4 m) long with a longest span of 43 ft (13.1 m) and a deck 28 ft wide.

Who owns Gowdyville Road over S Fork Siuslaw River?

It is owned by the County Highway Agency.