US Bridges

Mullen Road over Creek

Good

Thurston County, Washington · .7 Mi. W of Marvin RD · Structure no. 086526000000000

Built
1999
26 years old
Condition
Good
inspected August 2023
Type
Slab
Prestressed Concrete
Length
92 ft
2 main spans
Daily traffic
7,703
2021 count
Owner
County
County Highway Agency

About this bridge

Mullen Road over Creek is a prestressed concrete slab carrying Mullen Road over Creek in Thurston County, Washington. It was built in 1999, so it is 26 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 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 7,703 vehicles a day, roughly 15% of them trucks, projected to reach 11,909 by 2043. The structure is 92 ft (28 m) long and 36 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesMullen Road
CrossesCreek
Location.7 Mi. W of Marvin RD
RouteCounty Highway 13490
Coordinates47.00347, -122.76889
Functional classUrban Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating97 US tons
Inventory rating58 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length92 ft (28 m)
Longest span46 ft (14 m)
Deck width36 ft (11 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deck12 ft (3.7 m)

Traffic and service

Average daily traffic7,703 (2021)
Projected traffic11,909 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mullen Road over Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Mullen Road over 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 August 2023.

How much traffic does Mullen Road over Creek carry?

About 7,703 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Mullen Road over Creek?

The structure is 92 ft (28 m) long with a longest span of 46 ft (14 m) and a deck 36 ft wide.

Who owns Mullen Road over Creek?

It is owned by the County Highway Agency.