US Bridges

Thornton Street over BNSF Railway

Good

Whatcom County, Washington · At BNSF Railway Crossing · Structure no. 089493000000000

Built
2023
2 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
386 ft
3 main spans
Daily traffic
6,561
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Thornton Street over BNSF Railway is a prestressed concrete stringer/multi-beam or girder carrying Thornton Street over BNSF Railway in Whatcom County, Washington. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,561 vehicles a day, projected to reach 10,339 by 2044. The structure is 386 ft (117.7 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesThornton Street
CrossesBNSF Railway
LocationAt BNSF Railway Crossing
RouteCity Street 0
Coordinates48.86293, -122.59091
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating48.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHL 93
Structure length386 ft (117.7 m)
Longest span122 ft (37.2 m)
Deck width47 ft (14.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,561 (2024)
Projected traffic10,339 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 km)
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$14.3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Thornton Street over BNSF Railway built?

It was built in 2023, making it 2 years old in 2025.

What condition is Thornton Street over BNSF Railway 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 February 2024.

How much traffic does Thornton Street over BNSF Railway carry?

About 6,561 vehicles per day (2024 count).

How long is Thornton Street over BNSF Railway?

The structure is 386 ft (117.7 m) long with a longest span of 122 ft (37.2 m) and a deck 47 ft wide.

Who owns Thornton Street over BNSF Railway?

It is owned by the City or Municipal Highway Agency.