US Bridges

I-5 over RR and Cameron Way

Fair

Skagit County, Washington · 0.6 N JCT SR 536 · Structure no. 0004768A0000000

Built
1954
71 years old, rebuilt 1975
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
467 ft
8 main spans
Daily traffic
37,729
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 over RR and Cameron Way is a concrete continuous box beam or girders - multiple carrying I-5 over RR and Cameron Way in Skagit County, Washington. It was built in 1954 and reconstructed in 1975, so it is 71 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 37,729 vehicles a day, roughly 10% of them trucks, projected to reach 55,817 by 2040. The structure is 467 ft (142.3 m) long and 82 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-5
CrossesRR and Cameron Way
Location0.6 N JCT SR 536
RouteInterstate 5
Coordinates48.4255, -122.33789
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.3 US tons
Inventory rating18.5 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length467 ft (142.3 m)
Longest span77 ft (23.5 m)
Deck width82 ft (25.1 m)
Roadway width81 ft (24.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,729 (2023)
Projected traffic55,817 by 2040
Trucks10%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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$18.2 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 over RR and Cameron Way built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1975.

What condition is I-5 over RR and Cameron Way 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 March 2023.

How much traffic does I-5 over RR and Cameron Way carry?

About 37,729 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is I-5 over RR and Cameron Way?

The structure is 467 ft (142.3 m) long with a longest span of 77 ft (23.5 m) and a deck 82 ft wide.

Who owns I-5 over RR and Cameron Way?

It is owned by the State Highway Agency.