US Bridges

I-5 (hwy 001) Con over Sheridan ST

Fair

Multnomah County, Oregon · W. End of Marquam Br · Structure no. 08193 061C00052

Built
1959
66 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
149 ft
3 main spans
Daily traffic
3,857
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) Con over Sheridan ST is a concrete continuous tee beam carrying I-5 (hwy 001) Con over Sheridan ST in Multnomah County, Oregon. It was built in 1959, so it is 66 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 3,857 vehicles a day, roughly 9% of them trucks, projected to reach 9,000 by 2030. The structure is 149 ft (45.4 m) long and 89 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
CrossesSheridan ST
LocationW. End of Marquam Br
RouteInterstate 405
CountyMultnomah County
StateOregon
Coordinates45.5049, -122.6749
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.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.8 US tons
Inventory rating16.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length149 ft (45.4 m)
Longest span65 ft (19.8 m)
Deck width89 ft (27.2 m)
Roadway width82 ft (25 m)
Vertical clearance over deck16 ft (5 m)

Traffic and service

Average daily traffic3,857 (2022)
Projected traffic9,000 by 2030
Trucks9%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$763,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 (hwy 001) Con over Sheridan ST built?

It was built in 1959, making it 66 years old in 2025.

What condition is I-5 (hwy 001) Con over Sheridan ST 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) Con over Sheridan ST carry?

About 3,857 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is I-5 (hwy 001) Con over Sheridan ST?

The structure is 149 ft (45.4 m) long with a longest span of 65 ft (19.8 m) and a deck 89 ft wide.

Who owns I-5 (hwy 001) Con over Sheridan ST?

It is owned by the State Highway Agency.