US Bridges

Calapooia R. Road over Calapooia River

Good

Linn County, Oregon · 037 MI SE HWY 228 · Structure no. 12848A759 00367

Built
1979
46 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
273 ft
3 main spans
Daily traffic
180
2021 count
Owner
County
County Highway Agency

About this bridge

Calapooia R. Road over Calapooia River is a prestressed concrete stringer/multi-beam or girder carrying Calapooia R. Road over Calapooia River in Linn County, Oregon. It was built in 1979, so it is 46 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 180 vehicles a day, roughly 15% of them trucks, projected to reach 258 by 2041. The structure is 273 ft (83.2 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCalapooia R. Road
CrossesCalapooia River
Location037 MI SE HWY 228
RouteCounty Highway A0482
StateOregon
Coordinates44.32082, -122.73285
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to 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 rating34.3 US tons
Inventory rating26.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length273 ft (83.2 m)
Longest span105 ft (32 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2021)
Projected traffic258 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Calapooia R. Road over Calapooia River built?

It was built in 1979, making it 46 years old in 2025.

What condition is Calapooia R. Road over Calapooia 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 May 2023.

How much traffic does Calapooia R. Road over Calapooia River carry?

About 180 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Calapooia R. Road over Calapooia River?

The structure is 273 ft (83.2 m) long with a longest span of 105 ft (32 m) and a deck 33 ft wide.

Who owns Calapooia R. Road over Calapooia River?

It is owned by the County Highway Agency.