US Bridges

SB on Ramp over Terrain

Good

Pierce County, Washington · 7.7 N Thurston CO · Structure no. 0019133B0000000

Built
2020
5 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
164 ft
1 main span
Daily traffic
6,559
2023 count
Owner
State
State Highway Agency

About this bridge

SB on Ramp over Terrain is a prestressed concrete stringer/multi-beam or girder carrying SB on Ramp over Terrain in Pierce County, Washington. It was built in 2020, so it is 5 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 6,559 vehicles a day, roughly 5% of them trucks, projected to reach 7,918 by 2041. The structure is 164 ft (50 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSB on Ramp
CrossesTerrain
Location7.7 N Thurston CO
RouteInterstate 5
Coordinates47.11807, -122.55836
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.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating48.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length164 ft (50 m)
Longest span154 ft (46.9 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,559 (2023)
Projected traffic7,918 by 2041
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SB on Ramp over Terrain built?

It was built in 2020, making it 5 years old in 2025.

What condition is SB on Ramp over Terrain 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 March 2024.

How much traffic does SB on Ramp over Terrain carry?

About 6,559 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SB on Ramp over Terrain?

The structure is 164 ft (50 m) long with a longest span of 154 ft (46.9 m) and a deck 43 ft wide.

Who owns SB on Ramp over Terrain?

It is owned by the State Highway Agency.