US Bridges

56 ST E over Clarks Creek

Good

Pierce County, Washington · .7 S JCT SR410 · Structure no. 082477000000000

Built
1939
86 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
61 ft
3 main spans
Daily traffic
500
2019 count
Owner
County
County Highway Agency

About this bridge

56 ST E over Clarks Creek is a concrete continuous box beam or girders - multiple carrying 56 ST E over Clarks Creek in Pierce County, Washington. It was built in 1939, so it is 86 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 500 vehicles a day, roughly 2% of them trucks, projected to reach 825 by 2040. The structure is 61 ft (18.6 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries56 ST E
CrossesClarks Creek
Location.7 S JCT SR410
RouteCounty Highway 68560
Coordinates47.20618, -122.3401
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.9 US tons
Inventory rating20.9 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length61 ft (18.6 m)
Longest span38 ft (11.6 m)
Deck width28 ft (8.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2019)
Projected traffic825 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.2 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 56 ST E over Clarks Creek built?

It was built in 1939, making it 86 years old in 2025.

What condition is 56 ST E over Clarks 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 July 2023.

How much traffic does 56 ST E over Clarks Creek carry?

About 500 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is 56 ST E over Clarks Creek?

The structure is 61 ft (18.6 m) long with a longest span of 38 ft (11.6 m) and a deck 28 ft wide.

Who owns 56 ST E over Clarks Creek?

It is owned by the County Highway Agency.