US Bridges

Riverside ST over US 97 (hwy 004)

Fair

Klamath County, Oregon · 009 MI S HWY 20 JCT · Structure no. 09693 004 27593

Built
1968
57 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
270 ft
3 main spans
Daily traffic
8,287
2020 count
Owner
State
State Highway Agency

About this bridge

Riverside ST over US 97 (hwy 004) is a steel continuous stringer/multi-beam or girder carrying Riverside ST over US 97 (hwy 004) in Klamath County, Oregon. It was built in 1968, so it is 57 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,287 vehicles a day, roughly 24% of them trucks, projected to reach 12,400 by 2040. The structure is 270 ft (82.3 m) long and 35 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesRiverside ST
CrossesUS 97 (hwy 004)
Location009 MI S HWY 20 JCT
RouteCounty Highway 0
CountyKlamath County
StateOregon
Coordinates42.20755, -121.78803
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length270 ft (82.3 m)
Longest span153 ft (46.6 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,287 (2020)
Projected traffic12,400 by 2040
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Riverside ST over US 97 (hwy 004) built?

It was built in 1968, making it 57 years old in 2025.

What condition is Riverside ST over US 97 (hwy 004) in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does Riverside ST over US 97 (hwy 004) carry?

About 8,287 vehicles per day (2020 count), of which roughly 24% are trucks.

How long is Riverside ST over US 97 (hwy 004)?

The structure is 270 ft (82.3 m) long with a longest span of 153 ft (46.6 m) and a deck 35 ft wide.

Who owns Riverside ST over US 97 (hwy 004)?

It is owned by the State Highway Agency.