US Bridges

State Route 88 over Jackson Creek

Good

Amador County, California · 10-AMA-088-3.09 · Structure no. 26 0019

Built
1940
85 years old, rebuilt 2013
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
228 ft
11 main spans
Daily traffic
9,200
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 88 over Jackson Creek is a concrete continuous slab carrying State Route 88 over Jackson Creek in Amador County, California. It was built in 1940 and reconstructed in 2013, so it is 85 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,200 vehicles a day, roughly 8% of them trucks, projected to reach 17,485 by 2041. The structure is 228 ft (69.5 m) long and 43 ft wide. If it were closed, the detour would be 17.4 mi (28 km).

Location

Open in Google Maps
CarriesState Route 88
CrossesJackson Creek
Location10-AMA-088-3.09
RouteState Highway 88
CountyAmador County
StateCalifornia
Coordinates38.30702, -120.97791
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.5 US tons
Inventory rating26.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadH 20
Structure length228 ft (69.5 m)
Longest span24 ft (7.3 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,200 (2009)
Projected traffic17,485 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed17.4 mi (28 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 88 over Jackson Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2013.

What condition is State Route 88 over Jackson Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does State Route 88 over Jackson Creek carry?

About 9,200 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is State Route 88 over Jackson Creek?

The structure is 228 ft (69.5 m) long with a longest span of 24 ft (7.3 m) and a deck 43 ft wide.

Who owns State Route 88 over Jackson Creek?

It is owned by the State Highway Agency.