US Bridges

12th ST E over Wapato Creek

Good

Pierce County, Washington · .23 E JCT SR509 · Structure no. 089466000000000

Built
2023
2 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete Continuous
Length
46 ft
1 main span
Daily traffic
4,225
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

12th ST E over Wapato Creek is a concrete continuous slab carrying 12th ST E over Wapato Creek in Pierce County, Washington. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,225 vehicles a day, roughly 5% of them trucks, projected to reach 5,000 by 2043. The structure is 46 ft (13.9 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries12th ST E
CrossesWapato Creek
Location.23 E JCT SR509
RouteCity Street 0
CountyPierce County
StateWashington
Coordinates47.24631, -122.36956
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.5 US tons
Inventory rating52.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length46 ft (13.9 m)
Longest span41 ft (12.6 m)
Deck width49 ft (14.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,225 (2020)
Projected traffic5,000 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 12th ST E over Wapato Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is 12th ST E over Wapato 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 October 2023.

How much traffic does 12th ST E over Wapato Creek carry?

About 4,225 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is 12th ST E over Wapato Creek?

The structure is 46 ft (13.9 m) long with a longest span of 41 ft (12.6 m) and a deck 49 ft wide.

Who owns 12th ST E over Wapato Creek?

It is owned by the City or Municipal Highway Agency.