US Bridges

Ingomar Grade over Los Banos Creek

Fair

Merced County, California · 0.15 MI NW Badger Flat R · Structure no. 39C0055

Built
1988
37 years old
Condition
Fair
inspected February 2025
Type
Slab
Concrete Continuous
Length
67 ft
3 main spans
Daily traffic
4,890
2000 count
Owner
County
County Highway Agency

About this bridge

Ingomar Grade over Los Banos Creek is a concrete continuous slab carrying Ingomar Grade over Los Banos Creek in Merced County, California. It was built in 1988, so it is 37 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 4,890 vehicles a day, roughly 5% of them trucks, projected to reach 10,174 by 2043. The structure is 67 ft (20.4 m) long and 35 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesIngomar Grade
CrossesLos Banos Creek
Location0.15 MI NW Badger Flat R
RouteCounty Highway 0
CountyMerced County
StateCalifornia
Coordinates37.07583, -120.87761
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length67 ft (20.4 m)
Longest span26 ft (7.9 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,890 (2000)
Projected traffic10,174 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Ingomar Grade over Los Banos Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Ingomar Grade over Los Banos Creek 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 February 2025.

How much traffic does Ingomar Grade over Los Banos Creek carry?

About 4,890 vehicles per day (2000 count), of which roughly 5% are trucks.

How long is Ingomar Grade over Los Banos Creek?

The structure is 67 ft (20.4 m) long with a longest span of 26 ft (7.9 m) and a deck 35 ft wide.

Who owns Ingomar Grade over Los Banos Creek?

It is owned by the County Highway Agency.