US Bridges

I-5 over Scatter Creek

Good

Thurston County, Washington · 2.0 N JCT US 12 · Structure no. 0017465C0000000

Built
2010
15 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
86 ft
1 main span
Daily traffic
33,313
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 over Scatter Creek is a prestressed concrete slab carrying I-5 over Scatter Creek in Thurston County, Washington. It was built in 2010, so it is 15 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 33,313 vehicles a day, roughly 17% of them trucks, projected to reach 48,132 by 2039. The structure is 86 ft (26.2 m) long and 117 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-5
CrossesScatter Creek
Location2.0 N JCT US 12
RouteInterstate 5
CountyThurston County
StateWashington
Coordinates46.82972, -122.99067
Functional classUrban Principal Arterial - Interstate

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 inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.9 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length86 ft (26.2 m)
Longest span85 ft (25.9 m)
Deck width117 ft (35.7 m)
Roadway width112 ft (34.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,313 (2023)
Projected traffic48,132 by 2039
Trucks17%
Lanes on structure6
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$4.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-5 over Scatter Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is I-5 over Scatter 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 September 2024.

How much traffic does I-5 over Scatter Creek carry?

About 33,313 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is I-5 over Scatter Creek?

The structure is 86 ft (26.2 m) long with a longest span of 85 ft (25.9 m) and a deck 117 ft wide.

Who owns I-5 over Scatter Creek?

It is owned by the State Highway Agency.