US Bridges

Or 34 (hwy 210) over Calapooia Overflow

FairPosted for load

Linn County, Oregon · 059 MI E Corvallis · Structure no. 09414 210 00591

Built
1971
54 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
29,513
2022 count
Owner
State
State Highway Agency

About this bridge

Or 34 (hwy 210) over Calapooia Overflow is a concrete continuous slab carrying Or 34 (hwy 210) over Calapooia Overflow in Linn County, Oregon. It was built in 1971, so it is 54 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. Its operating status is: posted for other load-capacity restriction.

It carries about 29,513 vehicles a day, roughly 5% of them trucks, projected to reach 33,900 by 2042. The structure is 128 ft (39 m) long and 88 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

CarriesOr 34 (hwy 210)
CrossesCalapooia Overflow
Location059 MI E Corvallis
RouteState Highway 34
StateOregon
Coordinates44.56205, -123.14269
Functional classRural Principal Arterial - Other

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 statusPosted for other load-capacity restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating17.5 US tons
Inventory rating13.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length128 ft (39 m)
Longest span52 ft (15.8 m)
Deck width88 ft (26.9 m)
Roadway width86 ft (26.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,513 (2022)
Projected traffic33,900 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Or 34 (hwy 210) over Calapooia Overflow built?

It was built in 1971, making it 54 years old in 2025.

What condition is Or 34 (hwy 210) over Calapooia Overflow 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 Or 34 (hwy 210) over Calapooia Overflow carry?

About 29,513 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Or 34 (hwy 210) over Calapooia Overflow?

The structure is 128 ft (39 m) long with a longest span of 52 ft (15.8 m) and a deck 88 ft wide.

Who owns Or 34 (hwy 210) over Calapooia Overflow?

It is owned by the State Highway Agency.