US Bridges

NW Kittridge Ave. over B-10 over Bnrr

Fair

Multnomah County, Oregon · NW Front-Nw ST Helens RD · Structure no. 25B10 000 00004

Built
1968
57 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
763 ft
8 main spans
Daily traffic
8,604
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

NW Kittridge Ave. over B-10 over Bnrr is a prestressed concrete stringer/multi-beam or girder carrying NW Kittridge Ave. over B-10 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 5 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 8,604 vehicles a day, roughly 25% of them trucks, projected to reach 10,935 by 2025. The structure is 763 ft (232.6 m) long and 55 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNW Kittridge Ave.
CrossesB-10 over Bnrr
LocationNW Front-Nw ST Helens RD
RouteCity Street 9300
CountyMultnomah County
StateOregon
Coordinates45.5565, -122.73218
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
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 alignment8: Equal to present desirable criteria
Operating rating23.9 US tons
Inventory rating18.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length763 ft (232.6 m)
Longest span109 ft (33.2 m)
Deck width55 ft (16.8 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,604 (2020)
Projected traffic10,935 by 2025
Trucks25%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.1 mi (5 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$3.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was NW Kittridge Ave. over B-10 over Bnrr built?

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

What condition is NW Kittridge Ave. over B-10 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 September 2024.

How much traffic does NW Kittridge Ave. over B-10 over Bnrr carry?

About 8,604 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is NW Kittridge Ave. over B-10 over Bnrr?

The structure is 763 ft (232.6 m) long with a longest span of 109 ft (33.2 m) and a deck 55 ft wide.

Who owns NW Kittridge Ave. over B-10 over Bnrr?

It is owned by the City or Municipal Highway Agency.