US Bridges

Sandy Bar Road over Ti Creek

Fair

Siskiyou County, California · Ukonom · Structure no. 050558000001052

Built
1965
60 years old
Condition
Fair
inspected October 2021
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
46 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Sandy Bar Road over Ti Creek is a wood or timber stringer/multi-beam or girder carrying Sandy Bar Road over Ti Creek in Siskiyou County, California. It was built in 1965, so it is 60 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 46 ft (14 m) long and 16 ft wide.

Location

Open in Google Maps
CarriesSandy Bar Road
CrossesTi Creek
LocationUkonom
RouteFederal Lands Road 13N11
CountySiskiyou County
StateCalifornia
Coordinates41.53152, -123.4819
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2021
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length46 ft (14 m)
Longest span43 ft (13.1 m)
Deck width16 ft (4.8 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 Sandy Bar Road over Ti Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Sandy Bar Road over Ti 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 October 2021.

How much traffic does Sandy Bar Road over Ti Creek carry?

About 50 vehicles per day (latest count).

How long is Sandy Bar Road over Ti Creek?

The structure is 46 ft (14 m) long with a longest span of 43 ft (13.1 m) and a deck 16 ft wide.

Who owns Sandy Bar Road over Ti Creek?

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