US Bridges

Loma Rica RD over Jack Slough

Fair

Yuba County, California · 0.8 MI N of SR 20 · Structure no. 16C0003

Built
1957
68 years old
Condition
Fair
inspected August 2024
Type
Culvert
Steel
Length
51 ft
3 main spans
Daily traffic
2,670
2013 count
Owner
County
County Highway Agency

About this bridge

Loma Rica RD over Jack Slough is a steel culvert carrying Loma Rica RD over Jack Slough in Yuba County, California. It was built in 1957, so it is 68 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 2,670 vehicles a day, roughly 10% of them trucks, projected to reach 6,651 by 2046. The structure is 51 ft (15.5 m) long and 33 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesLoma Rica RD
CrossesJack Slough
Location0.8 MI N of SR 20
RouteCounty Highway 0
CountyYuba County
StateCalifornia
Coordinates39.22505, -121.51079
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length51 ft (15.5 m)
Longest span14 ft (4.3 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,670 (2013)
Projected traffic6,651 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 Loma Rica RD over Jack Slough built?

It was built in 1957, making it 68 years old in 2025.

What condition is Loma Rica RD over Jack 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 August 2024.

How much traffic does Loma Rica RD over Jack Slough carry?

About 2,670 vehicles per day (2013 count), of which roughly 10% are trucks.

How long is Loma Rica RD over Jack Slough?

The structure is 51 ft (15.5 m) long with a longest span of 14 ft (4.3 m) and a deck 33 ft wide.

Who owns Loma Rica RD over Jack Slough?

It is owned by the County Highway Agency.