US Bridges

Marine DR over BNSF RR

Poor

Whatcom County, Washington · 00.2 E Wynn RD · Structure no. 081877000000000

Built
1940
85 years old
Condition
Poor
inspected October 2024
Type
Tee Beam
Concrete Continuous
Length
196 ft
5 main spans
Daily traffic
6,344
2024 count
Owner
County
County Highway Agency

About this bridge

Marine DR over BNSF RR is a concrete continuous tee beam carrying Marine DR over BNSF RR in Whatcom County, Washington. It was built in 1940, so it is 85 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,344 vehicles a day, roughly 7% of them trucks, projected to reach 7,500 by 2046. The structure is 196 ft (59.7 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMarine DR
CrossesBNSF RR
Location00.2 E Wynn RD
RouteCounty Highway 12790
Coordinates48.78318, -122.54862
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.2 US tons
Inventory rating22.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length196 ft (59.7 m)
Longest span72 ft (21.9 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,344 (2024)
Projected traffic7,500 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$3.8 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Marine DR over BNSF RR built?

It was built in 1940, making it 85 years old in 2025.

What condition is Marine DR over BNSF RR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Marine DR over BNSF RR carry?

About 6,344 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Marine DR over BNSF RR?

The structure is 196 ft (59.7 m) long with a longest span of 72 ft (21.9 m) and a deck 32 ft wide.

Who owns Marine DR over BNSF RR?

It is owned by the County Highway Agency.