US Bridges

West Morrison Conn over City Streets & Park

Fair

Multnomah County, Oregon · West End Morrison Br · Structure no. 02758B932600000

Built
1958
67 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
1,218 ft
23 main spans
Daily traffic
57,504
2020 count
Owner
County
County Highway Agency

About this bridge

West Morrison Conn over City Streets & Park is a steel stringer/multi-beam or girder carrying West Morrison Conn over City Streets & Park in Multnomah County, Oregon. It was built in 1958, so it is 67 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 57,504 vehicles a day, roughly 10% of them trucks, projected to reach 86,206 by 2025. The structure is 1,218 ft (371.2 m) long and 82 ft wide.

Location

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CarriesWest Morrison Conn
CrossesCity Streets & Park
LocationWest End Morrison Br
RouteCity Street 9326
CountyMultnomah County
StateOregon
Coordinates45.51841, -122.67196
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMarch 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.1 US tons
Inventory rating20.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans23
Design loadHS 20
Structure length1,218 ft (371.2 m)
Longest span111 ft (33.8 m)
Deck width82 ft (25 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57,504 (2020)
Projected traffic86,206 by 2025
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$8.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was West Morrison Conn over City Streets & Park built?

It was built in 1958, making it 67 years old in 2025.

What condition is West Morrison Conn over City Streets & Park 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 March 2023.

How much traffic does West Morrison Conn over City Streets & Park carry?

About 57,504 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is West Morrison Conn over City Streets & Park?

The structure is 1,218 ft (371.2 m) long with a longest span of 111 ft (33.8 m) and a deck 82 ft wide.

Who owns West Morrison Conn over City Streets & Park?

It is owned by the County Highway Agency.