US Bridges

Mt. Washington Dr. over Deschutes River

Good

Deschutes County, Oregon · North Bend · Structure no. 21153 506 00700

Built
2009
16 years old
Condition
Good
inspected July 2023
Type
Tee Beam
Prestressed Concrete
Length
122 ft
1 main span
Daily traffic
1,409
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mt. Washington Dr. over Deschutes River is a prestressed concrete tee beam carrying Mt. Washington Dr. over Deschutes River in Deschutes County, Oregon. It was built in 2009, so it is 16 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 1,409 vehicles a day, roughly 10% of them trucks, projected to reach 1,604 by 2025. The structure is 122 ft (37.2 m) long and 62 ft wide.

CarriesMt. Washington Dr.
CrossesDeschutes River
LocationNorth Bend
RouteCounty Highway 506
StateOregon
Coordinates44.07914, -121.30614
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 protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length122 ft (37.2 m)
Longest span120 ft (36.6 m)
Deck width62 ft (18.9 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,409 (2020)
Projected traffic1,604 by 2025
Trucks10%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mt. Washington Dr. over Deschutes River built?

It was built in 2009, making it 16 years old in 2025.

What condition is Mt. Washington Dr. over Deschutes River 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 2023.

How much traffic does Mt. Washington Dr. over Deschutes River carry?

About 1,409 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Mt. Washington Dr. over Deschutes River?

The structure is 122 ft (37.2 m) long with a longest span of 120 ft (36.6 m) and a deck 62 ft wide.

Who owns Mt. Washington Dr. over Deschutes River?

It is owned by the City or Municipal Highway Agency.