US Bridges

HWY 123 over HWY 001

Fair

Multnomah County, Oregon · 3.5 MI N of Portland Cc · Structure no. 08996 123 00533

Built
1964
61 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
216 ft
4 main spans
Daily traffic
22,253
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 123 over HWY 001 is a concrete continuous box beam or girders - multiple carrying HWY 123 over HWY 001 in Multnomah County, Oregon. It was built in 1964, so it is 61 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 22,253 vehicles a day, roughly 3% of them trucks, projected to reach 28,300 by 2042. The structure is 216 ft (65.7 m) long and 74 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHWY 123
CrossesHWY 001
Location3.5 MI N of Portland Cc
RouteU.S. Route 30
StateOregon
Coordinates45.57721, -122.67859
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.9 US tons
Inventory rating21.4 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length216 ft (65.7 m)
Longest span63 ft (19.1 m)
Deck width74 ft (22.7 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,253 (2022)
Projected traffic28,300 by 2042
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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$2.7 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY 123 over HWY 001 built?

It was built in 1964, making it 61 years old in 2025.

What condition is HWY 123 over HWY 001 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 September 2023.

How much traffic does HWY 123 over HWY 001 carry?

About 22,253 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is HWY 123 over HWY 001?

The structure is 216 ft (65.7 m) long with a longest span of 63 ft (19.1 m) and a deck 74 ft wide.

Who owns HWY 123 over HWY 001?

It is owned by the State Highway Agency.