US Bridges

W. Kneeland Blvd over US 101

Good

Mason County, Washington · 1.7 S JCT SR 102 · Structure no. 0014145A0000000

Built
1993
32 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
100 ft
1 main span
Daily traffic
6,636
2012 count
Owner
State
State Highway Agency

About this bridge

W. Kneeland Blvd over US 101 is a prestressed concrete stringer/multi-beam or girder carrying W. Kneeland Blvd over US 101 in Mason County, Washington. It was built in 1993, so it is 32 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 6,636 vehicles a day, roughly 10% of them trucks, projected to reach 11,095 by 2036. The structure is 100 ft (30.5 m) long and 43 ft wide.

CarriesW. Kneeland Blvd
CrossesUS 101
Location1.7 S JCT SR 102
RouteCounty Highway 0
Coordinates47.23122, -123.12847
Functional classUrban Other Principal 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.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length100 ft (30.5 m)
Longest span95 ft (29 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,636 (2012)
Projected traffic11,095 by 2036
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$2 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was W. Kneeland Blvd over US 101 built?

It was built in 1993, making it 32 years old in 2025.

What condition is W. Kneeland Blvd over US 101 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 July 2024.

How much traffic does W. Kneeland Blvd over US 101 carry?

About 6,636 vehicles per day (2012 count), of which roughly 10% are trucks.

How long is W. Kneeland Blvd over US 101?

The structure is 100 ft (30.5 m) long with a longest span of 95 ft (29 m) and a deck 43 ft wide.

Who owns W. Kneeland Blvd over US 101?

It is owned by the State Highway Agency.