US Bridges

75 ST W over Flett Creek

Good

Pierce County, Washington · .1 W JCT 61 Avesw · Structure no. 083470000000000

Built
1970
55 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
125 ft
1 main span
Daily traffic
1,827
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

75 ST W over Flett Creek is a prestressed concrete stringer/multi-beam or girder carrying 75 ST W over Flett Creek in Pierce County, Washington. It was built in 1970, so it is 55 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 1,827 vehicles a day, roughly 5% of them trucks, projected to reach 2,500 by 2041. The structure is 125 ft (38.1 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries75 ST W
CrossesFlett Creek
Location.1 W JCT 61 Avesw
RouteCity Street 9280
Coordinates47.1893, -122.52012
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 alignment8: Equal to present desirable criteria
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span120 ft (36.6 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,827 (2023)
Projected traffic2,500 by 2041
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$4.1 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 75 ST W over Flett Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is 75 ST W over Flett 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 75 ST W over Flett Creek carry?

About 1,827 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is 75 ST W over Flett Creek?

The structure is 125 ft (38.1 m) long with a longest span of 120 ft (36.6 m) and a deck 36 ft wide.

Who owns 75 ST W over Flett Creek?

It is owned by the City or Municipal Highway Agency.