US Bridges

Smith R RD #48 over Smith River @ Gardiner

Good

Douglas County, Oregon · 1.0 MI S of Gardiner · Structure no. 19C500 48 017

Built
1967
58 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
518 ft
1 main span
Daily traffic
1,852
2020 count
Owner
County
County Highway Agency

About this bridge

Smith R RD #48 over Smith River @ Gardiner is a steel stringer/multi-beam or girder carrying Smith R RD #48 over Smith River @ Gardiner in Douglas County, Oregon. It was built in 1967, so it is 58 years old, older 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 1,852 vehicles a day, roughly 20% of them trucks, projected to reach 2,092 by 2025. The structure is 518 ft (157.9 m) long and 38 ft wide. If it were closed, the detour would be 28.6 mi (46 km).

CarriesSmith R RD #48
CrossesSmith River @ Gardiner
Location1.0 MI S of Gardiner
RouteCounty Highway A0409
StateOregon
Coordinates43.71476, -124.0947
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating31.7 US tons
Inventory rating24.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+10 approach)
Design loadHS 20
Structure length518 ft (157.9 m)
Longest span65 ft (19.8 m)
Deck width38 ft (11.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,852 (2020)
Projected traffic2,092 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28.6 mi (46 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 Smith R RD #48 over Smith River @ Gardiner built?

It was built in 1967, making it 58 years old in 2025.

What condition is Smith R RD #48 over Smith River @ Gardiner 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 August 2024.

How much traffic does Smith R RD #48 over Smith River @ Gardiner carry?

About 1,852 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Smith R RD #48 over Smith River @ Gardiner?

The structure is 518 ft (157.9 m) long with a longest span of 65 ft (19.8 m) and a deck 38 ft wide.

Who owns Smith R RD #48 over Smith River @ Gardiner?

It is owned by the County Highway Agency.