US Bridges

Or 99E (hwy 58) over Calapooia Bottoms No. 7

Fair

Linn County, Oregon · 043 MI S Tangent · Structure no. 00566A058 01396

Built
1955
70 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
275 ft
11 main spans
Daily traffic
3,487
2022 count
Owner
State
State Highway Agency

About this bridge

Or 99E (hwy 58) over Calapooia Bottoms No. 7 is a concrete stringer/multi-beam or girder carrying Or 99E (hwy 58) over Calapooia Bottoms No. 7 in Linn County, Oregon. It was built in 1955, so it is 70 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.

It carries about 3,487 vehicles a day, roughly 14% of them trucks, projected to reach 3,600 by 2042. The structure is 275 ft (83.8 m) long and 34 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

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CarriesOr 99E (hwy 58)
CrossesCalapooia Bottoms No. 7
Location043 MI S Tangent
RouteState Highway 99
CountyLinn County
StateOregon
Coordinates44.46719, -123.1104
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 statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length275 ft (83.8 m)
Longest span25 ft (7.6 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,487 (2022)
Projected traffic3,600 by 2042
Trucks14%
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

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 99E (hwy 58) over Calapooia Bottoms No. 7 built?

It was built in 1955, making it 70 years old in 2025.

What condition is Or 99E (hwy 58) over Calapooia Bottoms No. 7 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 Bottoms No. 7 carry?

About 3,487 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Or 99E (hwy 58) over Calapooia Bottoms No. 7?

The structure is 275 ft (83.8 m) long with a longest span of 25 ft (7.6 m) and a deck 34 ft wide.

Who owns Or 99E (hwy 58) over Calapooia Bottoms No. 7?

It is owned by the State Highway Agency.