US Bridges

Day Isl Bridge RD over Day Island Lagoon

FairPosted for load

Pierce County, Washington · .6 W JCT Grdvw DR · Structure no. 080893000000000

Built
1957
68 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
600 ft
12 main spans
Daily traffic
1,229
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Day Isl Bridge RD over Day Island Lagoon is a prestressed concrete stringer/multi-beam or girder carrying Day Isl Bridge RD over Day Island Lagoon in Pierce County, Washington. It was built in 1957, so it is 68 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,229 vehicles a day, roughly 8% of them trucks, projected to reach 2,030 by 2045. The structure is 600 ft (182.9 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesDay Isl Bridge RD
CrossesDay Island Lagoon
Location.6 W JCT Grdvw DR
RouteCity Street 39000
Coordinates47.23832, -122.56178
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.4 US tons
Inventory rating21.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans12
Design loadH 15
Structure length600 ft (182.9 m)
Longest span72 ft (21.9 m)
Deck width25 ft (7.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,229 (2024)
Projected traffic2,030 by 2045
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway, waterway and railroad
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$18.5 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Day Isl Bridge RD over Day Island Lagoon built?

It was built in 1957, making it 68 years old in 2025.

What condition is Day Isl Bridge RD over Day Island Lagoon in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does Day Isl Bridge RD over Day Island Lagoon carry?

About 1,229 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Day Isl Bridge RD over Day Island Lagoon?

The structure is 600 ft (182.9 m) long with a longest span of 72 ft (21.9 m) and a deck 25 ft wide.

Who owns Day Isl Bridge RD over Day Island Lagoon?

It is owned by the City or Municipal Highway Agency.