US Bridges

New LA Grange Road over Dawson Lake

Fair

Stanislaus County, California · 0.8 MI S State Route 132 · Structure no. 38C0144

Built
1975
50 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
1,720
2013 count
Owner
County
County Highway Agency

About this bridge

New LA Grange Road over Dawson Lake is a concrete continuous slab carrying New LA Grange Road over Dawson Lake in Stanislaus County, California. It was built in 1975, so it is 50 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 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 1,720 vehicles a day, roughly 22% of them trucks, projected to reach 2,081 by 2043. The structure is 102 ft (31.1 m) long and 34 ft wide. If it were closed, the detour would be 23 mi (37 km).

Location

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CarriesNew LA Grange Road
CrossesDawson Lake
Location0.8 MI S State Route 132
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.65067, -120.47676
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89 US tons
Inventory rating53.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span40 ft (12.2 m)
Deck width34 ft (10.4 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,720 (2013)
Projected traffic2,081 by 2043
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 New LA Grange Road over Dawson Lake built?

It was built in 1975, making it 50 years old in 2025.

What condition is New LA Grange Road over Dawson Lake 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 September 2023.

How much traffic does New LA Grange Road over Dawson Lake carry?

About 1,720 vehicles per day (2013 count), of which roughly 22% are trucks.

How long is New LA Grange Road over Dawson Lake?

The structure is 102 ft (31.1 m) long with a longest span of 40 ft (12.2 m) and a deck 34 ft wide.

Who owns New LA Grange Road over Dawson Lake?

It is owned by the County Highway Agency.