US Bridges

I-5 (hwy 001) SB over Clarks Branch RD

Fair

Douglas County, Oregon · 10.5 MI S of Roseburg Scl · Structure no. 07839 001 11344

Built
1956
69 years old, rebuilt 1995
Condition
Fair
inspected January 2025
Type
Tee Beam
Concrete Continuous
Length
145 ft
3 main spans
Daily traffic
12,949
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) SB over Clarks Branch RD is a concrete continuous tee beam carrying I-5 (hwy 001) SB over Clarks Branch RD in Douglas County, Oregon. It was built in 1956 and reconstructed in 1995, so it is 69 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 12,949 vehicles a day, roughly 27% of them trucks, projected to reach 16,350 by 2042. The structure is 145 ft (44.2 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-5 (hwy 001) SB
CrossesClarks Branch RD
Location10.5 MI S of Roseburg Scl
RouteInterstate 5
CountyDouglas County
StateOregon
Coordinates43.07403, -123.35833
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.3 US tons
Inventory rating19 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length145 ft (44.2 m)
Longest span54 ft (16.5 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,949 (2022)
Projected traffic16,350 by 2042
Trucks27%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 (hwy 001) SB over Clarks Branch RD built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1995.

What condition is I-5 (hwy 001) SB over Clarks Branch 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 January 2025.

How much traffic does I-5 (hwy 001) SB over Clarks Branch RD carry?

About 12,949 vehicles per day (2022 count), of which roughly 27% are trucks.

How long is I-5 (hwy 001) SB over Clarks Branch RD?

The structure is 145 ft (44.2 m) long with a longest span of 54 ft (16.5 m) and a deck 45 ft wide.

Who owns I-5 (hwy 001) SB over Clarks Branch RD?

It is owned by the State Highway Agency.