US Bridges

Latrobe Road over Cosumnes River

Fair

Amador County, California · Amador-El Dorado CO Line · Structure no. 26C0001

Built
1959
66 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete Continuous
Length
398 ft
4 main spans
Daily traffic
3,244
2013 count
Owner
County
County Highway Agency

About this bridge

Latrobe Road over Cosumnes River is a concrete continuous tee beam carrying Latrobe Road over Cosumnes River in Amador County, California. It was built in 1959, so it is 66 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 5 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 3,244 vehicles a day, roughly 4% of them trucks, projected to reach 5,308 by 2042. The structure is 398 ft (121.3 m) long and 29 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesLatrobe Road
CrossesCosumnes River
LocationAmador-El Dorado CO Line
RouteCounty Highway 0
CountyAmador County
StateCalifornia
Coordinates38.52185, -120.95571
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.4 US tons
Inventory rating19 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4 (+4 approach)
Design loadHS 20
Structure length398 ft (121.3 m)
Longest span75 ft (22.9 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,244 (2013)
Projected traffic5,308 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 Latrobe Road over Cosumnes River built?

It was built in 1959, making it 66 years old in 2025.

What condition is Latrobe Road over Cosumnes River 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 April 2024.

How much traffic does Latrobe Road over Cosumnes River carry?

About 3,244 vehicles per day (2013 count), of which roughly 4% are trucks.

How long is Latrobe Road over Cosumnes River?

The structure is 398 ft (121.3 m) long with a longest span of 75 ft (22.9 m) and a deck 29 ft wide.

Who owns Latrobe Road over Cosumnes River?

It is owned by the County Highway Agency.