US Bridges

I-5 (hwy 001) over I-5 @ Speedway RD

Fair

Douglas County, Oregon · HWY 001 over Speedway RD · Structure no. 07804N001 12003

Built
1955
70 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete Continuous
Length
110 ft
3 main spans
Daily traffic
41,824
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) over I-5 @ Speedway RD is a concrete continuous slab carrying I-5 (hwy 001) over I-5 @ Speedway RD in Douglas 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 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 41,824 vehicles a day, roughly 20% of them trucks, projected to reach 47,900 by 2042. The structure is 110 ft (33.5 m) long and 115 ft wide. If it were closed, the detour would be 20.5 mi (33 km).

Location

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CarriesI-5 (hwy 001)
CrossesI-5 @ Speedway RD
LocationHWY 001 over Speedway RD
RouteInterstate 5
CountyDouglas County
StateOregon
Coordinates43.16052, -123.36531
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length110 ft (33.5 m)
Longest span44 ft (13.4 m)
Deck width115 ft (35 m)
Roadway width110 ft (33.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,824 (2022)
Projected traffic47,900 by 2042
Trucks20%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed20.5 mi (33 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 (hwy 001) over I-5 @ Speedway RD built?

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

What condition is I-5 (hwy 001) over I-5 @ Speedway RD 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 February 2023.

How much traffic does I-5 (hwy 001) over I-5 @ Speedway RD carry?

About 41,824 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is I-5 (hwy 001) over I-5 @ Speedway RD?

The structure is 110 ft (33.5 m) long with a longest span of 44 ft (13.4 m) and a deck 115 ft wide.

Who owns I-5 (hwy 001) over I-5 @ Speedway RD?

It is owned by the State Highway Agency.