US Bridges

Sauvie Island Rd. over Multnomah Channel

Good

Multnomah County, Oregon · Multnomah Channel MP 205 · Structure no. 20136 000000000

Built
2008
17 years old
Condition
Good
inspected September 2023
Type
Arch - Thru
Steel
Length
1,177 ft
1 main span
Daily traffic
5,463
2020 count
Owner
County
County Highway Agency

About this bridge

Sauvie Island Rd. over Multnomah Channel is a steel arch - thru carrying Sauvie Island Rd. over Multnomah Channel in Multnomah County, Oregon. It was built in 2008, so it is 17 years old, younger than the Oregon average of 49.9 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 5,463 vehicles a day, roughly 10% of them trucks, projected to reach 6,008 by 2025. The structure is 1,177 ft (358.8 m) long and 66 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesSauvie Island Rd.
CrossesMultnomah Channel
LocationMultnomah Channel MP 205
RouteCounty Highway 0
CountyMultnomah County
StateOregon
Coordinates45.62801, -122.81599
Functional classRural 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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating43.2 US tons
Inventory rating33.2 US tons

Structure

Structure typeArch - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadHL 93
Structure length1,177 ft (358.8 m)
Longest span365 ft (111.3 m)
Deck width66 ft (20.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deck26 ft (7.9 m)

Traffic and service

Average daily traffic5,463 (2020)
Projected traffic6,008 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway, waterway and railroad
Detour if closed123.7 mi (199 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 proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Sauvie Island Rd. over Multnomah Channel built?

It was built in 2008, making it 17 years old in 2025.

What condition is Sauvie Island Rd. over Multnomah Channel 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 Sauvie Island Rd. over Multnomah Channel carry?

About 5,463 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Sauvie Island Rd. over Multnomah Channel?

The structure is 1,177 ft (358.8 m) long with a longest span of 365 ft (111.3 m) and a deck 66 ft wide.

Who owns Sauvie Island Rd. over Multnomah Channel?

It is owned by the County Highway Agency.