US Bridges

Peninsula Drive over I-90

Good

Grant County, Washington · 0.6 E JCT SR 171 · Structure no. 0015898B0000000

Built
2001
24 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
185 ft
2 main spans
Daily traffic
231
2012 count
Owner
State
State Highway Agency

About this bridge

Peninsula Drive over I-90 is a prestressed concrete continuous box beam or girders - multiple carrying Peninsula Drive over I-90 in Grant County, Washington. It was built in 2001, so it is 24 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 231 vehicles a day, roughly 5% of them trucks, projected to reach 2,029 by 2033. The structure is 185 ft (56.4 m) long and 49 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesPeninsula Drive
CrossesI-90
Location0.6 E JCT SR 171
RouteCity Street 0
CountyGrant County
StateWashington
Coordinates47.10072, -119.3064
Functional classUrban Local

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.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating94 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length185 ft (56.4 m)
Longest span98 ft (29.9 m)
Deck width49 ft (14.9 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic231 (2012)
Projected traffic2,029 by 2033
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

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$3.3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Peninsula Drive over I-90 built?

It was built in 2001, making it 24 years old in 2025.

What condition is Peninsula Drive over I-90 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 2023.

How much traffic does Peninsula Drive over I-90 carry?

About 231 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is Peninsula Drive over I-90?

The structure is 185 ft (56.4 m) long with a longest span of 98 ft (29.9 m) and a deck 49 ft wide.

Who owns Peninsula Drive over I-90?

It is owned by the State Highway Agency.