US Bridges

HWY 1 to Morrison over HWY 1 SB Conn 7

Fair

Multnomah County, Oregon · 0.3 MI S of Burnside Br · Structure no. 08589C001 30150

Built
1963
62 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
1,398 ft
15 main spans
Daily traffic
14,116
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 1 to Morrison over HWY 1 SB Conn 7 is a steel stringer/multi-beam or girder carrying HWY 1 to Morrison over HWY 1 SB Conn 7 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 52,800 by 2040. The structure is 1,398 ft (426.1 m) long and 27 ft wide.

Location

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CarriesHWY 1 to Morrison
CrossesHWY 1 SB Conn 7
Location0.3 MI S of Burnside Br
RouteInterstate 5
CountyMultnomah County
StateOregon
Coordinates45.5203, -122.6664
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.
Substructure7 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating17.2 US tons
Inventory rating13.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans15 (+1 approach)
Design loadHS 20
Structure length1,398 ft (426.1 m)
Longest span135 ft (41.1 m)
Deck width27 ft (8.2 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,116 (2022)
Projected traffic52,800 by 2040
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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$6.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY 1 to Morrison over HWY 1 SB Conn 7 built?

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

What condition is HWY 1 to Morrison over HWY 1 SB Conn 7 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 Morrison over HWY 1 SB Conn 7 carry?

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

How long is HWY 1 to Morrison over HWY 1 SB Conn 7?

The structure is 1,398 ft (426.1 m) long with a longest span of 135 ft (41.1 m) and a deck 27 ft wide.

Who owns HWY 1 to Morrison over HWY 1 SB Conn 7?

It is owned by the State Highway Agency.