US Bridges

Both Decks HWY 61 over NW Front ST RR

Fair

Multnomah County, Oregon · W Fremont Intrche · Structure no. 09268 061 00310

Built
1973
52 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
385 ft
2 main spans
Daily traffic
103,251
2022 count
Owner
State
State Highway Agency

About this bridge

Both Decks HWY 61 over NW Front ST RR is a steel continuous box beam or girders - multiple carrying Both Decks HWY 61 over NW Front ST RR in Multnomah County, Oregon. It was built in 1973, so it is 52 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 103,251 vehicles a day, roughly 8% of them trucks, projected to reach 121,900 by 2042. The structure is 385 ft (117.3 m) long and 143 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesBoth Decks HWY 61
CrossesNW Front ST RR
LocationW Fremont Intrche
RouteInterstate 405
StateOregon
Coordinates45.5359, -122.6856
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
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating36.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length385 ft (117.3 m)
Longest span192 ft (58.5 m)
Deck width143 ft (43.6 m)
Roadway width136 ft (41.5 m)
Vertical clearance over deck18 ft (5.6 m)

Traffic and service

Average daily traffic103,251 (2022)
Projected traffic121,900 by 2042
Trucks8%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed11.8 mi (19 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Both Decks HWY 61 over NW Front ST RR built?

It was built in 1973, making it 52 years old in 2025.

What condition is Both Decks HWY 61 over NW Front ST RR 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 2023.

How much traffic does Both Decks HWY 61 over NW Front ST RR carry?

About 103,251 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Both Decks HWY 61 over NW Front ST RR?

The structure is 385 ft (117.3 m) long with a longest span of 192 ft (58.5 m) and a deck 143 ft wide.

Who owns Both Decks HWY 61 over NW Front ST RR?

It is owned by the State Highway Agency.