US Bridges

W 4th Avenue over Budd Inlet W. Bay & Bnrr

Good

Thurston County, Washington · 4th Avenue · Structure no. 087279000000000

Built
2004
21 years old
Condition
Good
inspected September 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
749 ft
6 main spans
Daily traffic
20,060
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

W 4th Avenue over Budd Inlet W. Bay & Bnrr is a prestressed concrete continuous box beam or girders - single or spread carrying W 4th Avenue over Budd Inlet W. Bay & Bnrr in Thurston County, Washington. It was built in 2004, so it is 21 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 20,060 vehicles a day, roughly 5% of them trucks, projected to reach 23,000 by 2036. The structure is 749 ft (228.3 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesW 4th Avenue
CrossesBudd Inlet W. Bay & Bnrr
Location4th Avenue
RouteCity Street 156
Coordinates47.04428, -122.91158
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating76.4 US tons
Inventory rating63.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHL 93
Structure length749 ft (228.3 m)
Longest span170 ft (51.8 m)
Deck width66 ft (20.1 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,060 (2020)
Projected traffic23,000 by 2036
Trucks5%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$36.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was W 4th Avenue over Budd Inlet W. Bay & Bnrr built?

It was built in 2004, making it 21 years old in 2025.

What condition is W 4th Avenue over Budd Inlet W. Bay & Bnrr 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 W 4th Avenue over Budd Inlet W. Bay & Bnrr carry?

About 20,060 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is W 4th Avenue over Budd Inlet W. Bay & Bnrr?

The structure is 749 ft (228.3 m) long with a longest span of 170 ft (51.8 m) and a deck 66 ft wide.

Who owns W 4th Avenue over Budd Inlet W. Bay & Bnrr?

It is owned by the City or Municipal Highway Agency.