US Bridges

Minkler Road over Wiseman Creek

Fair

Skagit County, Washington · 0.5 W JCT SR 20 · Structure no. 081777000000000

Built
1967
58 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
41 ft
1 main span
Daily traffic
936
2024 count
Owner
County
County Highway Agency

About this bridge

Minkler Road over Wiseman Creek is a concrete stringer/multi-beam or girder carrying Minkler Road over Wiseman Creek in Skagit County, Washington. It was built in 1967, so it is 58 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 936 vehicles a day, roughly 7% of them trucks, projected to reach 1,515 by 2040. The structure is 41 ft (12.4 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMinkler Road
CrossesWiseman Creek
Location0.5 W JCT SR 20
RouteCounty Highway 93500
CountySkagit County
StateWashington
Coordinates48.52558, -122.13108
Functional classRural Minor Collector

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length41 ft (12.4 m)
Longest span39 ft (11.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic936 (2024)
Projected traffic1,515 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$581,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Minkler Road over Wiseman Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Minkler Road over Wiseman Creek 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 May 2024.

How much traffic does Minkler Road over Wiseman Creek carry?

About 936 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Minkler Road over Wiseman Creek?

The structure is 41 ft (12.4 m) long with a longest span of 39 ft (11.9 m) and a deck 30 ft wide.

Who owns Minkler Road over Wiseman Creek?

It is owned by the County Highway Agency.