US Bridges

Railroad Flat RD over Jesus Maria Creek

Fair

Calaveras County, California · 1.8 Mi. S. Jesus Maria RD · Structure no. 30C0046

Built
1978
47 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
40 ft
3 main spans
Daily traffic
571
2008 count
Owner
County
County Highway Agency

About this bridge

Railroad Flat RD over Jesus Maria Creek is a concrete continuous culvert carrying Railroad Flat RD over Jesus Maria Creek in Calaveras County, California. It was built in 1978, so it is 47 years old, younger 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 571 vehicles a day, roughly 2% of them trucks, projected to reach 677 by 2044. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesRailroad Flat RD
CrossesJesus Maria Creek
Location1.8 Mi. S. Jesus Maria RD
RouteCounty Highway 0
CountyCalaveras County
StateCalifornia
Coordinates38.26689, -120.50328
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic571 (2008)
Projected traffic677 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 Flat RD over Jesus Maria Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Railroad Flat RD over Jesus Maria 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 March 2024.

How much traffic does Railroad Flat RD over Jesus Maria Creek carry?

About 571 vehicles per day (2008 count), of which roughly 2% are trucks.

How long is Railroad Flat RD over Jesus Maria Creek?

The structure is 40 ft (12.2 m) long with a longest span of 13 ft (3.9 m).

Who owns Railroad Flat RD over Jesus Maria Creek?

It is owned by the County Highway Agency.