US Bridges

Chambers Lake Road over Muck Creek

GoodPosted for load

Pierce County, Washington · Grid Coord ET355067 · Structure no. DAPFORLEW000006

Built
1950
75 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
200
2016 count
Owner
Federal
Army

About this bridge

Chambers Lake Road over Muck Creek is a steel stringer/multi-beam or girder carrying Chambers Lake Road over Muck Creek in Pierce County, Washington. It was built in 1950, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 200 vehicles a day, roughly 25% of them trucks, projected to reach 220 by 2046. The structure is 40 ft (12.2 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesChambers Lake Road
CrossesMuck Creek
LocationGrid Coord ET355067
Coordinates47.01347, -122.5331
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 protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.4 US tons
Inventory rating21.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span39 ft (12 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2016)
Projected traffic220 by 2046
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerArmy
Maintained byArmy
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$2,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Chambers Lake Road over Muck Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Chambers Lake Road over Muck 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 August 2024.

How much traffic does Chambers Lake Road over Muck Creek carry?

About 200 vehicles per day (2016 count), of which roughly 25% are trucks.

How long is Chambers Lake Road over Muck Creek?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (12 m) and a deck 28 ft wide.

Who owns Chambers Lake Road over Muck Creek?

It is owned by the Army.