US Bridges

Shenandoah Road over Big Indian Creek

Poor

Amador County, California · 1 MI N Plmth Fidletown RD · Structure no. 26C0022

Built
1930
95 years old, rebuilt 1969
Condition
Poor
inspected April 2024
Type
Tee Beam
Concrete
Length
22 ft
1 main span
Daily traffic
3,006
2013 count
Owner
County
County Highway Agency

About this bridge

Shenandoah Road over Big Indian Creek is a concrete tee beam carrying Shenandoah Road over Big Indian Creek in Amador County, California. It was built in 1930 and reconstructed in 1969, so it is 95 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 3,006 vehicles a day, roughly 7% of them trucks, projected to reach 6,869 by 2042. The structure is 22 ft (6.7 m) long and 32 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesShenandoah Road
CrossesBig Indian Creek
Location1 MI N Plmth Fidletown RD
RouteCounty Highway 0
Coordinates38.49537, -120.82887
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating18.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,006 (2013)
Projected traffic6,869 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$255,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Shenandoah Road over Big Indian Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1969.

What condition is Shenandoah Road over Big Indian Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does Shenandoah Road over Big Indian Creek carry?

About 3,006 vehicles per day (2013 count), of which roughly 7% are trucks.

How long is Shenandoah Road over Big Indian Creek?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 32 ft wide.

Who owns Shenandoah Road over Big Indian Creek?

It is owned by the County Highway Agency.