US Bridges

Tyler Road over South Fork Cosumnes Riv

Fair

Amador County, California · 3.0 MI NE of Lawrence RD · Structure no. 26C0029

Built
1945
80 years old, rebuilt 2021
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
23 ft
1 main span
Daily traffic
56
2014 count
Owner
County
County Highway Agency

About this bridge

Tyler Road over South Fork Cosumnes Riv is a wood or timber stringer/multi-beam or girder carrying Tyler Road over South Fork Cosumnes Riv in Amador County, California. It was built in 1945 and reconstructed in 2021, so it is 80 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 56 vehicles a day, projected to reach 114 by 2042. The structure is 23 ft (7 m) long and 17 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesTyler Road
CrossesSouth Fork Cosumnes Riv
Location3.0 MI NE of Lawrence RD
RouteCounty Highway 0
Coordinates38.52773, -120.68611
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29.3 US tons
Inventory rating21.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width17 ft (5.2 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56 (2014)
Projected traffic114 by 2042
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Tyler Road over South Fork Cosumnes Riv built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 2021.

What condition is Tyler Road over South Fork Cosumnes Riv 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 Tyler Road over South Fork Cosumnes Riv carry?

About 56 vehicles per day (2014 count).

How long is Tyler Road over South Fork Cosumnes Riv?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 17 ft wide.

Who owns Tyler Road over South Fork Cosumnes Riv?

It is owned by the County Highway Agency.