US Bridges

South Indian Road over S. Fork Indian Creek

Fair

Siskiyou County, California · Indian · Structure no. 050552000001019

Built
1966
59 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
168 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

South Indian Road over S. Fork Indian Creek is a steel stringer/multi-beam or girder carrying South Indian Road over S. Fork Indian Creek in Siskiyou County, California. It was built in 1966, so it is 59 years old, older than the California average of 54.8 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 168 ft (51.2 m) long and 16 ft wide.

Location

Open in Google Maps
CarriesSouth Indian Road
CrossesS. Fork Indian Creek
LocationIndian
RouteFederal Lands Road 17N32
CountySiskiyou County
StateCalifornia
Coordinates41.87908, -123.43263
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation*: *
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating—
Inventory rating—

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length168 ft (51.2 m)
Longest span102 ft (31.1 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 South Indian Road over S. Fork Indian Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is South Indian Road over S. Fork Indian Creek 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 September 2023.

How much traffic does South Indian Road over S. Fork Indian Creek carry?

About 50 vehicles per day (latest count).

How long is South Indian Road over S. Fork Indian Creek?

The structure is 168 ft (51.2 m) long with a longest span of 102 ft (31.1 m) and a deck 16 ft wide.

Who owns South Indian Road over S. Fork Indian Creek?

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