US Bridges

SR 7 over Muck Creek

Good

Pierce County, Washington · 5.0 N JCT SR 702 · Structure no. 0018444A0000000

Built
2014
11 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
9,965
2023 count
Owner
State
State Highway Agency

About this bridge

SR 7 over Muck Creek is a concrete culvert carrying SR 7 over Muck Creek in Pierce County, Washington. It was built in 2014, so it is 11 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 9,965 vehicles a day, roughly 11% of them trucks, projected to reach 13,760 by 2039. The structure is 23 ft (6.9 m) long and 88 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesSR 7
CrossesMuck Creek
Location5.0 N JCT SR 702
RouteState Highway 7
Coordinates47.00778, -122.36758
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2024
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 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 rating62.5 US tons
Inventory rating48.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length23 ft (6.9 m)
Longest span23 ft (6.9 m)
Deck width88 ft (26.8 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,965 (2023)
Projected traffic13,760 by 2039
Trucks11%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$539,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 7 over Muck Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is SR 7 over Muck 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 April 2024.

How much traffic does SR 7 over Muck Creek carry?

About 9,965 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 7 over Muck Creek?

The structure is 23 ft (6.9 m) long with a longest span of 23 ft (6.9 m) and a deck 88 ft wide.

Who owns SR 7 over Muck Creek?

It is owned by the State Highway Agency.