US Bridges

Beaver Lake RD over Nookachamps Creek

Fair

Skagit County, Washington · 3.0 SE JCT SR 9 · Structure no. 082564000000000

Built
1977
48 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
73 ft
1 main span
Daily traffic
186
2021 count
Owner
County
County Highway Agency

About this bridge

Beaver Lake RD over Nookachamps Creek is a prestressed concrete stringer/multi-beam or girder carrying Beaver Lake RD over Nookachamps Creek in Skagit County, Washington. It was built in 1977, so it is 48 years old, younger 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 5 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 186 vehicles a day, roughly 13% of them trucks, projected to reach 276 by 2041. The structure is 73 ft (22.3 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesBeaver Lake RD
CrossesNookachamps Creek
Location3.0 SE JCT SR 9
RouteCounty Highway 5110
Coordinates48.42417, -122.20985
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51 US tons
Inventory rating30 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length73 ft (22.3 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic186 (2021)
Projected traffic276 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$936,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Beaver Lake RD over Nookachamps Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Beaver Lake RD over Nookachamps 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 August 2024.

How much traffic does Beaver Lake RD over Nookachamps Creek carry?

About 186 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is Beaver Lake RD over Nookachamps Creek?

The structure is 73 ft (22.3 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns Beaver Lake RD over Nookachamps Creek?

It is owned by the County Highway Agency.