US Bridges

I-5 (hwy 001) NB over N Umpqua Corp CR & Corp

Fair

Douglas County, Oregon · 03.4 MI N of Roseburg Ncl · Structure no. 07663C001 12892

Built
1955
70 years old, rebuilt 1979
Condition
Fair
inspected July 2023
Type
Truss - Deck
Steel
Length
1,637 ft
5 main spans
Daily traffic
16,874
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) NB over N Umpqua Corp CR & Corp is a steel truss - deck carrying I-5 (hwy 001) NB over N Umpqua Corp CR & Corp in Douglas County, Oregon. It was built in 1955 and reconstructed in 1979, 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 16,874 vehicles a day, roughly 20% of them trucks, projected to reach 17,600 by 2042. The structure is 1,637 ft (499 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-5 (hwy 001) NB
CrossesN Umpqua Corp CR & Corp
Location03.4 MI N of Roseburg Ncl
RouteInterstate 5
StateOregon
Coordinates43.28233, -123.35582
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating23.9 US tons

Structure

Structure typeTruss - Deck
MaterialSteel
DeckConcrete, cast-in-place
Main spans5 (+13 approach)
Design loadHS 20
Structure length1,637 ft (499 m)
Longest span140 ft (42.7 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,874 (2022)
Projected traffic17,600 by 2042
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$9.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-5 (hwy 001) NB over N Umpqua Corp CR & Corp built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1979.

What condition is I-5 (hwy 001) NB over N Umpqua Corp CR & Corp 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 July 2023.

How much traffic does I-5 (hwy 001) NB over N Umpqua Corp CR & Corp carry?

About 16,874 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is I-5 (hwy 001) NB over N Umpqua Corp CR & Corp?

The structure is 1,637 ft (499 m) long with a longest span of 140 ft (42.7 m) and a deck 35 ft wide.

Who owns I-5 (hwy 001) NB over N Umpqua Corp CR & Corp?

It is owned by the State Highway Agency.