US Bridges

Railroad Park Road over Little Castle Creek

Fair

Siskiyou County, California · 0.1 MI W of I-5 · Structure no. 02C0109

Built
1960
65 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
52 ft
1 main span
Daily traffic
126
2011 count
Owner
County
County Highway Agency

About this bridge

Railroad Park Road over Little Castle Creek is a concrete tee beam carrying Railroad Park Road over Little Castle Creek in Siskiyou County, California. It was built in 1960, so it is 65 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 5 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 126 vehicles a day, roughly 1% of them trucks, projected to reach 173 by 2041. The structure is 52 ft (15.8 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesRailroad Park Road
CrossesLittle Castle Creek
Location0.1 MI W of I-5
RouteCounty Highway 0
CountySiskiyou County
StateCalifornia
Coordinates41.18428, -122.29177
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating21.1 US tons
Inventory rating14.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length52 ft (15.8 m)
Longest span50 ft (15.2 m)
Deck width31 ft (9.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic126 (2011)
Projected traffic173 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Railroad Park Road over Little Castle Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Railroad Park Road over Little Castle 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 June 2023.

How much traffic does Railroad Park Road over Little Castle Creek carry?

About 126 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is Railroad Park Road over Little Castle Creek?

The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.2 m) and a deck 31 ft wide.

Who owns Railroad Park Road over Little Castle Creek?

It is owned by the County Highway Agency.