US Bridges

HWY 1 to Belmont over HWY 1 I-5

Fair

Multnomah County, Oregon · 0.4 MI S of Burnside Br · Structure no. 08589A001 30150

Built
1963
62 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
1,442 ft
16 main spans
Daily traffic
18,170
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 1 to Belmont over HWY 1 I-5 is a steel stringer/multi-beam or girder carrying HWY 1 to Belmont over HWY 1 I-5 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 18,170 vehicles a day, roughly 2% of them trucks, projected to reach 60,950 by 2040. The structure is 1,442 ft (439.5 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesHWY 1 to Belmont
CrossesHWY 1 I-5
Location0.4 MI S of Burnside Br
RouteInterstate 5
CountyMultnomah County
StateOregon
Coordinates45.5187, -122.6663
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating21.1 US tons
Inventory rating16.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans16
Design loadHS 20
Structure length1,442 ft (439.5 m)
Longest span140 ft (42.7 m)
Deck width27 ft (8.2 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,170 (2022)
Projected traffic60,950 by 2040
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesThird level (interchange)
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$6.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY 1 to Belmont over HWY 1 I-5 built?

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

What condition is HWY 1 to Belmont over HWY 1 I-5 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 May 2023.

How much traffic does HWY 1 to Belmont over HWY 1 I-5 carry?

About 18,170 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is HWY 1 to Belmont over HWY 1 I-5?

The structure is 1,442 ft (439.5 m) long with a longest span of 140 ft (42.7 m) and a deck 27 ft wide.

Who owns HWY 1 to Belmont over HWY 1 I-5?

It is owned by the State Highway Agency.