US Bridges

Ludwig Ave over Roseland CR Fld Cntl Chn

Fair

Sonoma County, California · 1.6 MI E JCT Wth Llano RD · Structure no. 20C0459

Built
1980
45 years old
Condition
Fair
inspected June 2022
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
1,700
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ludwig Ave over Roseland CR Fld Cntl Chn is a concrete culvert carrying Ludwig Ave over Roseland CR Fld Cntl Chn in Sonoma County, California. It was built in 1980, so it is 45 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 1,700 vehicles a day, roughly 1% of them trucks, projected to reach 1,886 by 2039. The structure is 26 ft (7.9 m) long and 42 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesLudwig Ave
CrossesRoseland CR Fld Cntl Chn
Location1.6 MI E JCT Wth Llano RD
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.40345, -122.75722
Functional classUrban Minor Arterial

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 inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than 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
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2017)
Projected traffic1,886 by 2039
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Ludwig Ave over Roseland CR Fld Cntl Chn built?

It was built in 1980, making it 45 years old in 2025.

What condition is Ludwig Ave over Roseland CR Fld Cntl Chn 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 June 2022.

How much traffic does Ludwig Ave over Roseland CR Fld Cntl Chn carry?

About 1,700 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Ludwig Ave over Roseland CR Fld Cntl Chn?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 42 ft wide.

Who owns Ludwig Ave over Roseland CR Fld Cntl Chn?

It is owned by the City or Municipal Highway Agency.