US Bridges

4th Ave over Santiam-Albany Canal

Fair

Linn County, Oregon · 4th Ave and Vine ST · Structure no. 43C15 000

Built
1930
95 years old, rebuilt 2000
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
22 ft
1 main span
Daily traffic
515
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

4th Ave over Santiam-Albany Canal is a concrete slab carrying 4th Ave over Santiam-Albany Canal in Linn County, Oregon. It was built in 1930 and reconstructed in 2000, so it is 95 years old, older 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 515 vehicles a day, roughly 5% of them trucks, projected to reach 824 by 2041. The structure is 22 ft (6.8 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries4th Ave
CrossesSantiam-Albany Canal
Location4th Ave and Vine ST
RouteCity Street 0
CountyLinn County
StateOregon
Coordinates44.63419, -123.11201
Functional classUrban Local

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 inspectionOctober 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating50.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.8 m)
Longest span21 ft (6.4 m)
Deck width67 ft (20.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic515 (2021)
Projected traffic824 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 4th Ave over Santiam-Albany Canal built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2000.

What condition is 4th Ave over Santiam-Albany Canal 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 October 2024.

How much traffic does 4th Ave over Santiam-Albany Canal carry?

About 515 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is 4th Ave over Santiam-Albany Canal?

The structure is 22 ft (6.8 m) long with a longest span of 21 ft (6.4 m) and a deck 67 ft wide.

Who owns 4th Ave over Santiam-Albany Canal?

It is owned by the City or Municipal Highway Agency.