US Bridges

Road over Sycan River

Fair

Klamath County, Oregon · No Data Entered · Structure no. 060203000001021

Built
1961
64 years old
Condition
Fair
inspected August 2022
Type
Frame
Concrete
Length
85 ft
3 main spans
Daily traffic
43
Owner
Federal
U.S. Forest Service

About this bridge

Road over Sycan River is a concrete frame carrying Road over Sycan River in Klamath County, Oregon. It was built in 1961, so it is 64 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 43 vehicles a day, projected to reach 64 by 2045. The structure is 85 ft (25.9 m) long and 19 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
CarriesRoad
CrossesSycan River
LocationNo Data Entered
RouteFederal Lands Road 30000
CountyKlamath County
StateOregon
Coordinates42.69786, -120.93228
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating55 US tons
Inventory rating40 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length85 ft (25.9 m)
Longest span55 ft (16.7 m)
Deck width19 ft (5.8 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43 (—)
Projected traffic64 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Road over Sycan River built?

It was built in 1961, making it 64 years old in 2025.

What condition is Road over Sycan River 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 August 2022.

How much traffic does Road over Sycan River carry?

About 43 vehicles per day (latest count).

How long is Road over Sycan River?

The structure is 85 ft (25.9 m) long with a longest span of 55 ft (16.7 m) and a deck 19 ft wide.

Who owns Road over Sycan River?

It is owned by the U.S. Forest Service.