US Bridges

I-5 (hwy 001) NB over Irwin Access

Good

Douglas County, Oregon · 00.4 MI N of Canyonville · Structure no. 20093 001 09953

Built
2007
18 years old
Condition
Good
inspected December 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
112 ft
1 main span
Daily traffic
12,029
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) NB over Irwin Access is a prestressed concrete box beam or girders - multiple carrying I-5 (hwy 001) NB over Irwin Access in Douglas County, Oregon. It was built in 2007, so it is 18 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,029 vehicles a day, roughly 27% of them trucks, projected to reach 13,000 by 2042. The structure is 112 ft (34.1 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-5 (hwy 001) NB
CrossesIrwin Access
Location00.4 MI N of Canyonville
RouteInterstate 5
CountyDouglas County
StateOregon
Coordinates42.9409, -123.28786
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.8 US tons
Inventory rating66 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length112 ft (34.1 m)
Longest span112 ft (34.1 m)
Deck width46 ft (13.9 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,029 (2022)
Projected traffic13,000 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) NB over Irwin Access built?

It was built in 2007, making it 18 years old in 2025.

What condition is I-5 (hwy 001) NB over Irwin Access in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does I-5 (hwy 001) NB over Irwin Access carry?

About 12,029 vehicles per day (2022 count), of which roughly 27% are trucks.

How long is I-5 (hwy 001) NB over Irwin Access?

The structure is 112 ft (34.1 m) long with a longest span of 112 ft (34.1 m) and a deck 46 ft wide.

Who owns I-5 (hwy 001) NB over Irwin Access?

It is owned by the State Highway Agency.