US Bridges

Burmaster Road over Coal Creek

Good

Skagit County, Washington · 1.2 E JCT Minkler · Structure no. 082049000000000

Built
1958
67 years old
Condition
Good
inspected May 2024
Type
Tee Beam
Concrete
Length
26 ft
1 main span
Daily traffic
353
2022 count
Owner
County
County Highway Agency

About this bridge

Burmaster Road over Coal Creek is a concrete tee beam carrying Burmaster Road over Coal Creek in Skagit 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 353 vehicles a day, roughly 9% of them trucks, projected to reach 525 by 2042. The structure is 26 ft (7.9 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesBurmaster Road
CrossesCoal Creek
Location1.2 E JCT Minkler
RouteCounty Highway 91400
Coordinates48.5145, -122.1635
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic353 (2022)
Projected traffic525 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$321,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Burmaster Road over Coal Creek built?

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

What condition is Burmaster Road over Coal Creek 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 May 2024.

How much traffic does Burmaster Road over Coal Creek carry?

About 353 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Burmaster Road over Coal Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 26 ft wide.

Who owns Burmaster Road over Coal Creek?

It is owned by the County Highway Agency.