US Bridges

I-5 (hwy 001) Con over HWY 1 SB Conn 7 Off Ramp

Fair

Multnomah County, Oregon · 0.3 MI N of Burnside Br · Structure no. R8588E001 30150

Built
1963
62 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
762 ft
6 main spans
Daily traffic
14,116
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) Con over HWY 1 SB Conn 7 Off Ramp is a steel stringer/multi-beam or girder carrying I-5 (hwy 001) Con over HWY 1 SB Conn 7 Off Ramp in Multnomah County, Oregon. It was built in 1963, so it is 62 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 14,116 vehicles a day, roughly 12% of them trucks, projected to reach 48,350 by 2040. The structure is 762 ft (232.2 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-5 (hwy 001) Con
CrossesHWY 1 SB Conn 7 Off Ramp
Location0.3 MI N of Burnside Br
RouteInterstate 5
CountyMultnomah County
StateOregon
Coordinates45.51801, -122.66652
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6 (+1 approach)
Design loadHS 20
Structure length762 ft (232.2 m)
Longest span120 ft (36.6 m)
Deck width26 ft (7.9 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deck27 ft (8.2 m)

Traffic and service

Average daily traffic14,116 (2022)
Projected traffic48,350 by 2040
Trucks12%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$3.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 (hwy 001) Con over HWY 1 SB Conn 7 Off Ramp built?

It was built in 1963, making it 62 years old in 2025.

What condition is I-5 (hwy 001) Con over HWY 1 SB Conn 7 Off Ramp 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 April 2023.

How much traffic does I-5 (hwy 001) Con over HWY 1 SB Conn 7 Off Ramp carry?

About 14,116 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is I-5 (hwy 001) Con over HWY 1 SB Conn 7 Off Ramp?

The structure is 762 ft (232.2 m) long with a longest span of 120 ft (36.6 m) and a deck 26 ft wide.

Who owns I-5 (hwy 001) Con over HWY 1 SB Conn 7 Off Ramp?

It is owned by the State Highway Agency.