US Bridges

Albro ST over I-5

Fair

King County, Washington · 3.9 N JCT SR 900 · Structure no. 0007675A0000000

Built
1966
59 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
287 ft
4 main spans
Daily traffic
15,563
2012 count
Owner
State
State Highway Agency

About this bridge

Albro ST over I-5 is a concrete continuous box beam or girders - multiple carrying Albro ST over I-5 in King County, Washington. It was built in 1966, so it is 59 years old, older than the Washington average of 49.8 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 15,563 vehicles a day, roughly 1% of them trucks, projected to reach 23,780 by 2036. The structure is 287 ft (87.5 m) long and 58 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesAlbro ST
CrossesI-5
Location3.9 N JCT SR 900
RouteCity Street 0
CountyKing County
StateWashington
Coordinates47.54826, -122.31233
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length287 ft (87.5 m)
Longest span81 ft (24.7 m)
Deck width58 ft (17.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,563 (2012)
Projected traffic23,780 by 2036
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$6.3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Albro ST over I-5 built?

It was built in 1966, making it 59 years old in 2025.

What condition is Albro ST over I-5 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 June 2023.

How much traffic does Albro ST over I-5 carry?

About 15,563 vehicles per day (2012 count), of which roughly 1% are trucks.

How long is Albro ST over I-5?

The structure is 287 ft (87.5 m) long with a longest span of 81 ft (24.7 m) and a deck 58 ft wide.

Who owns Albro ST over I-5?

It is owned by the State Highway Agency.