US Bridges

Or 99E (hwy 58) over Calapooia River

FairPosted for load

Linn County, Oregon · 025 MI S Tangent · Structure no. 02322 058 01134

Built
1937
88 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
291 ft
2 main spans
Daily traffic
3,351
2022 count
Owner
State
State Highway Agency

About this bridge

Or 99E (hwy 58) over Calapooia River is a steel stringer/multi-beam or girder carrying Or 99E (hwy 58) over Calapooia River in Linn County, Oregon. It was built in 1937, so it is 88 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 5 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 3,351 vehicles a day, roughly 15% of them trucks, projected to reach 5,500 by 2042. The structure is 291 ft (88.7 m) long and 35 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesOr 99E (hwy 58)
CrossesCalapooia River
Location025 MI S Tangent
RouteState Highway 99
CountyLinn County
StateOregon
Coordinates44.50438, -123.10861
Functional classRural Minor Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.7 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+9 approach)
Design loadH 15
Structure length291 ft (88.7 m)
Longest span60 ft (18.3 m)
Deck width35 ft (10.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,351 (2022)
Projected traffic5,500 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 99E (hwy 58) over Calapooia River built?

It was built in 1937, making it 88 years old in 2025.

What condition is Or 99E (hwy 58) over Calapooia 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 August 2024.

How much traffic does Or 99E (hwy 58) over Calapooia River carry?

About 3,351 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Or 99E (hwy 58) over Calapooia River?

The structure is 291 ft (88.7 m) long with a longest span of 60 ft (18.3 m) and a deck 35 ft wide.

Who owns Or 99E (hwy 58) over Calapooia River?

It is owned by the State Highway Agency.