US Bridges

Columbia Blvd over B-78A over Bnrr

Fair

Multnomah County, Oregon · In N Portland · Structure no. 09685A000000223

Built
1968
57 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
207 ft
2 main spans
Daily traffic
13,116
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Columbia Blvd over B-78A over Bnrr is a steel stringer/multi-beam or girder carrying Columbia Blvd over B-78A over Bnrr in Multnomah County, Oregon. It was built in 1968, so it is 57 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 13,116 vehicles a day, roughly 25% of them trucks, projected to reach 14,465 by 2025. The structure is 207 ft (63.1 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesColumbia Blvd
CrossesB-78A over Bnrr
LocationIn N Portland
RouteCounty Highway 9956
CountyMultnomah County
StateOregon
Coordinates45.5945, -122.72586
Functional classUrban Other Principal 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.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length207 ft (63.1 m)
Longest span78 ft (23.8 m)
Deck width34 ft (10.3 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,116 (2020)
Projected traffic14,465 by 2025
Trucks25%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Columbia Blvd over B-78A over Bnrr built?

It was built in 1968, making it 57 years old in 2025.

What condition is Columbia Blvd over B-78A over Bnrr 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 2024.

How much traffic does Columbia Blvd over B-78A over Bnrr carry?

About 13,116 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is Columbia Blvd over B-78A over Bnrr?

The structure is 207 ft (63.1 m) long with a longest span of 78 ft (23.8 m) and a deck 34 ft wide.

Who owns Columbia Blvd over B-78A over Bnrr?

It is owned by the City or Municipal Highway Agency.