US Bridges

So. Century Dr. over Deschutes River

Good

Deschutes County, Oregon · 2.8 MI W Hunington RD · Structure no. 16519 411207171

Built
1984
41 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
243 ft
3 main spans
Daily traffic
2,075
2020 count
Owner
County
County Highway Agency

About this bridge

So. Century Dr. over Deschutes River is a prestressed concrete stringer/multi-beam or girder carrying So. Century Dr. over Deschutes River in Deschutes County, Oregon. It was built in 1984, so it is 41 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 2,075 vehicles a day, roughly 3% of them trucks, projected to reach 2,390 by 2025. The structure is 243 ft (74.1 m) long and 44 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesSo. Century Dr.
CrossesDeschutes River
Location2.8 MI W Hunington RD
RouteCounty Highway 4112
StateOregon
Coordinates43.8176, -121.49868
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
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 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 rating44 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length243 ft (74.1 m)
Longest span80 ft (24.4 m)
Deck width44 ft (13.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,075 (2020)
Projected traffic2,390 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was So. Century Dr. over Deschutes River built?

It was built in 1984, making it 41 years old in 2025.

What condition is So. Century 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 March 2024.

How much traffic does So. Century Dr. over Deschutes River carry?

About 2,075 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is So. Century Dr. over Deschutes River?

The structure is 243 ft (74.1 m) long with a longest span of 80 ft (24.4 m) and a deck 44 ft wide.

Who owns So. Century Dr. over Deschutes River?

It is owned by the County Highway Agency.