US Bridges

Pleasant Grove RD over King Slough

Fair

Sutter County, California · 6.5 MI N/O Riego RD · Structure no. 18C0067

Built
1931
94 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
35 ft
3 main spans
Daily traffic
1,427
2015 count
Owner
County
County Highway Agency

About this bridge

Pleasant Grove RD over King Slough is a concrete continuous slab carrying Pleasant Grove RD over King Slough in Sutter County, California. It was built in 1931, so it is 94 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 1,427 vehicles a day, roughly 4% of them trucks, projected to reach 1,624 by 2046. The structure is 35 ft (10.7 m) long and 29 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesPleasant Grove RD
CrossesKing Slough
Location6.5 MI N/O Riego RD
RouteCounty Highway 0
CountySutter County
StateCalifornia
Coordinates38.83481, -121.48818
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span11 ft (3.4 m)
Deck width29 ft (8.7 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,427 (2015)
Projected traffic1,624 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Pleasant Grove RD over King Slough built?

It was built in 1931, making it 94 years old in 2025.

What condition is Pleasant Grove RD over King Slough 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 2024.

How much traffic does Pleasant Grove RD over King Slough carry?

About 1,427 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is Pleasant Grove RD over King Slough?

The structure is 35 ft (10.7 m) long with a longest span of 11 ft (3.4 m) and a deck 29 ft wide.

Who owns Pleasant Grove RD over King Slough?

It is owned by the County Highway Agency.