US Bridges

Eldridge Avenue over Squallicum Crk-Cmstp&p R

FairPosted for load

Whatcom County, Washington · 0.07 NW JCT Madrona ST · Structure no. 085402000000000

Built
1937
88 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete Continuous
Length
358 ft
7 main spans
Daily traffic
6,400
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Eldridge Avenue over Squallicum Crk-Cmstp&p R is a concrete continuous tee beam carrying Eldridge Avenue over Squallicum Crk-Cmstp&p R in Whatcom County, Washington. It was built in 1937, so it is 88 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. Its operating status is: posted for load restriction.

It carries about 6,400 vehicles a day, roughly 5% of them trucks, projected to reach 9,000 by 2043. The structure is 358 ft (109.1 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesEldridge Avenue
CrossesSquallicum Crk-Cmstp&p R
Location0.07 NW JCT Madrona ST
RouteCity Street 86603
Coordinates48.76249, -122.50744
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating17 US tons
Inventory rating10 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadH 15
Structure length358 ft (109.1 m)
Longest span60 ft (18.3 m)
Deck width38 ft (11.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,400 (2021)
Projected traffic9,000 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway, waterway and railroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$13.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Eldridge Avenue over Squallicum Crk-Cmstp&p R built?

It was built in 1937, making it 88 years old in 2025.

What condition is Eldridge Avenue over Squallicum Crk-Cmstp&p R 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 April 2023.

How much traffic does Eldridge Avenue over Squallicum Crk-Cmstp&p R carry?

About 6,400 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Eldridge Avenue over Squallicum Crk-Cmstp&p R?

The structure is 358 ft (109.1 m) long with a longest span of 60 ft (18.3 m) and a deck 38 ft wide.

Who owns Eldridge Avenue over Squallicum Crk-Cmstp&p R?

It is owned by the City or Municipal Highway Agency.