US Bridges

Snelling Road over Merced River

Good

Merced County, California · 0.5 MI South of SR 59 · Structure no. 39C0014

Built
1969
56 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
303 ft
3 main spans
Daily traffic
1,500
1990 count
Owner
County
County Highway Agency

About this bridge

Snelling Road over Merced River is a concrete continuous box beam or girders - multiple carrying Snelling Road over Merced River in Merced County, California. It was built in 1969, so it is 56 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,500 vehicles a day, roughly 3% of them trucks, projected to reach 3,816 by 2041. The structure is 303 ft (92.4 m) long and 32 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesSnelling Road
CrossesMerced River
Location0.5 MI South of SR 59
RouteCounty Highway 0
Coordinates37.50479, -120.45071
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
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 rating37.5 US tons
Inventory rating28.9 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length303 ft (92.4 m)
Longest span100 ft (30.5 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (1990)
Projected traffic3,816 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 Snelling Road over Merced River built?

It was built in 1969, making it 56 years old in 2025.

What condition is Snelling Road over Merced River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Snelling Road over Merced River carry?

About 1,500 vehicles per day (1990 count), of which roughly 3% are trucks.

How long is Snelling Road over Merced River?

The structure is 303 ft (92.4 m) long with a longest span of 100 ft (30.5 m) and a deck 32 ft wide.

Who owns Snelling Road over Merced River?

It is owned by the County Highway Agency.