US Bridges

Nco Beach RD over American Lake

Good

Pierce County, Washington · ET311172 · Structure no. DAPFORLEW008005

Built
1995
30 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
500
2016 count
Owner
Federal
Army

About this bridge

Nco Beach RD over American Lake is a concrete culvert carrying Nco Beach RD over American Lake in Pierce County, Washington. It was built in 1995, so it is 30 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 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 500 vehicles a day, roughly 20% of them trucks, projected to reach 500 by 2046. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNco Beach RD
CrossesAmerican Lake
LocationET311172
Coordinates47.10799, -122.5898
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2016)
Projected traffic500 by 2046
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Nco Beach RD over American Lake built?

It was built in 1995, making it 30 years old in 2025.

What condition is Nco Beach RD over American Lake 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 Nco Beach RD over American Lake carry?

About 500 vehicles per day (2016 count), of which roughly 20% are trucks.

How long is Nco Beach RD over American Lake?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).

Who owns Nco Beach RD over American Lake?

It is owned by the Army.