US Bridges

SR 507 over Muck Creek

Fair

Pierce County, Washington · 7.8 N JCT SR 702 · Structure no. 0003884B0000000

Built
1920
105 years old, rebuilt 1950
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
46 ft
3 main spans
Daily traffic
11,031
2023 count
Owner
State
State Highway Agency

About this bridge

SR 507 over Muck Creek is a concrete continuous slab carrying SR 507 over Muck Creek in Pierce County, Washington. It was built in 1920 and reconstructed in 1950, so it is 105 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 11,031 vehicles a day, roughly 7% of them trucks, projected to reach 16,206 by 2039. The structure is 46 ft (14 m) long and 28 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesSR 507
CrossesMuck Creek
Location7.8 N JCT SR 702
RouteState Highway 507
CountyPierce County
StateWashington
Coordinates47.03253, -122.49436
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length46 ft (14 m)
Longest span14 ft (4.3 m)
Deck width28 ft (8.4 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,031 (2023)
Projected traffic16,206 by 2039
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$743,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 507 over Muck Creek built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1950.

What condition is SR 507 over Muck Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does SR 507 over Muck Creek carry?

About 11,031 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is SR 507 over Muck Creek?

The structure is 46 ft (14 m) long with a longest span of 14 ft (4.3 m) and a deck 28 ft wide.

Who owns SR 507 over Muck Creek?

It is owned by the State Highway Agency.