US Bridges

Redmond Ridge NE over Wetland

Good

King County, Washington · 300 NW of NE 80th Street · Structure no. 087124000000000

Built
2001
24 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
195 ft
3 main spans
Daily traffic
5,998
2022 count
Owner
County
County Highway Agency

About this bridge

Redmond Ridge NE over Wetland is a prestressed concrete continuous stringer/multi-beam or girder carrying Redmond Ridge NE over Wetland in King 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 5,998 vehicles a day, roughly 1% of them trucks, projected to reach 10,834 by 2042. The structure is 195 ft (59.4 m) long and 49 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesRedmond Ridge NE
CrossesWetland
Location300 NW of NE 80th Street
RouteCounty Highway 67495
Coordinates47.67592, -122.02286
Functional classUrban Minor 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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
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 alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating44 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length195 ft (59.4 m)
Longest span65 ft (19.8 m)
Deck width49 ft (14.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,998 (2022)
Projected traffic10,834 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRelief for waterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$4.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Redmond Ridge NE over Wetland built?

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

What condition is Redmond Ridge NE over Wetland 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 May 2023.

How much traffic does Redmond Ridge NE over Wetland carry?

About 5,998 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Redmond Ridge NE over Wetland?

The structure is 195 ft (59.4 m) long with a longest span of 65 ft (19.8 m) and a deck 49 ft wide.

Who owns Redmond Ridge NE over Wetland?

It is owned by the County Highway Agency.