US Bridges

I-5 (hwy 001) over Myrtle CR Inter

Fair

Douglas County, Oregon · 09.2 MI N of Canyonville · Structure no. 07950 001 10831

Built
1958
67 years old, rebuilt 1999
Condition
Fair
inspected January 2025
Type
Tee Beam
Concrete Continuous
Length
204 ft
4 main spans
Daily traffic
28,573
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) over Myrtle CR Inter is a concrete continuous tee beam carrying I-5 (hwy 001) over Myrtle CR Inter in Douglas County, Oregon. It was built in 1958 and reconstructed in 1999, so it is 67 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 28,573 vehicles a day, roughly 27% of them trucks, projected to reach 29,900 by 2042. The structure is 204 ft (62.2 m) long and 95 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesI-5 (hwy 001)
CrossesMyrtle CR Inter
Location09.2 MI N of Canyonville
RouteInterstate 5
CountyDouglas County
StateOregon
Coordinates43.02585, -123.29936
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
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 rating49.3 US tons
Inventory rating37.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length204 ft (62.2 m)
Longest span77 ft (23.5 m)
Deck width95 ft (29 m)
Roadway width91 ft (27.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,573 (2022)
Projected traffic29,900 by 2042
Trucks27%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed123.7 mi (199 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 Myrtle CR Inter built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1999.

What condition is I-5 (hwy 001) over Myrtle CR Inter 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) over Myrtle CR Inter carry?

About 28,573 vehicles per day (2022 count), of which roughly 27% are trucks.

How long is I-5 (hwy 001) over Myrtle CR Inter?

The structure is 204 ft (62.2 m) long with a longest span of 77 ft (23.5 m) and a deck 95 ft wide.

Who owns I-5 (hwy 001) over Myrtle CR Inter?

It is owned by the State Highway Agency.