US Bridges

12th ST E over Hylebos Creek

Good

Pierce County, Washington · 0.34 W HWY 99 · Structure no. 0019540R0000000

Built
2023
2 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
70 ft
1 main span
Daily traffic
4,225
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

12th ST E over Hylebos Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying 12th ST E over Hylebos 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 6,800 by 2041. The structure is 70 ft (21.3 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries12th ST E
CrossesHylebos Creek
Location0.34 W HWY 99
RouteCity Street 69200
CountyPierce County
StateWashington
Coordinates47.24628, -122.34314
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 above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.8 US tons
Inventory rating52.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length70 ft (21.3 m)
Longest span69 ft (20.9 m)
Deck width46 ft (14 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,225 (2020)
Projected traffic6,800 by 2041
Trucks5%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 12th ST E over Hylebos Creek built?

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

What condition is 12th ST E over Hylebos 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 Hylebos Creek carry?

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

How long is 12th ST E over Hylebos Creek?

The structure is 70 ft (21.3 m) long with a longest span of 69 ft (20.9 m) and a deck 46 ft wide.

Who owns 12th ST E over Hylebos Creek?

It is owned by the City or Municipal Highway Agency.