US Bridges

I-5 over Lakeway Drive

Fair

Whatcom County, Washington · 2.2 N JCT SR 11 · Structure no. 0005790B0000000

Built
1958
67 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
84 ft
1 main span
Daily traffic
32,863
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 over Lakeway Drive is a concrete box beam or girders - multiple carrying I-5 over Lakeway Drive in Whatcom County, Washington. It was built in 1958, so it is 67 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 6 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 32,863 vehicles a day, roughly 7% of them trucks, projected to reach 46,634 by 2039. The structure is 84 ft (25.6 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-5
CrossesLakeway Drive
Location2.2 N JCT SR 11
RouteInterstate 5
CountyWhatcom County
StateWashington
Coordinates48.74486, -122.46639
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating61.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span76 ft (23.2 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,863 (2023)
Projected traffic46,634 by 2039
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 over Lakeway Drive built?

It was built in 1958, making it 67 years old in 2025.

What condition is I-5 over Lakeway Drive 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 October 2024.

How much traffic does I-5 over Lakeway Drive carry?

About 32,863 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is I-5 over Lakeway Drive?

The structure is 84 ft (25.6 m) long with a longest span of 76 ft (23.2 m) and a deck 40 ft wide.

Who owns I-5 over Lakeway Drive?

It is owned by the State Highway Agency.