US Bridges

Alderwood Mall Blv over City Maint Storage

Good

Snohomish County, Washington · 1.6 E JCT SR 99 · Structure no. 002003690000000

Built
2001
24 years old
Condition
Good
inspected July 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
92 ft
1 main span
Daily traffic
19,198
2004 count
Owner
City
City or Municipal Highway Agency

About this bridge

Alderwood Mall Blv over City Maint Storage is a prestressed concrete stringer/multi-beam or girder carrying Alderwood Mall Blv over City Maint Storage in Snohomish County, Washington. It was built in 2001, so it is 24 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 19,198 vehicles a day, projected to reach 33,942 by 2036. The structure is 92 ft (28 m) long and 61 ft wide.

CarriesAlderwood Mall Blv
CrossesCity Maint Storage
Location1.6 E JCT SR 99
RouteCity Street 524
Coordinates47.82131, -122.28022
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2022
Inspection intervalevery 48 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 rating59.6 US tons
Inventory rating45.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length92 ft (28 m)
Longest span92 ft (28 m)
Deck width61 ft (18.7 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,198 (2004)
Projected traffic33,942 by 2036
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.2 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Alderwood Mall Blv over City Maint Storage built?

It was built in 2001, making it 24 years old in 2025.

What condition is Alderwood Mall Blv over City Maint Storage in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2022.

How much traffic does Alderwood Mall Blv over City Maint Storage carry?

About 19,198 vehicles per day (2004 count).

How long is Alderwood Mall Blv over City Maint Storage?

The structure is 92 ft (28 m) long with a longest span of 92 ft (28 m) and a deck 61 ft wide.

Who owns Alderwood Mall Blv over City Maint Storage?

It is owned by the City or Municipal Highway Agency.