US Bridges

S Br Ingalsbe Slgh over South Br Ingalsbe Slough

Fair

Merced County, California · 10-MER-059-31.25 · Structure no. 39 0087

Built
1926
99 years old, rebuilt 1988
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
20 ft
1 main span
Daily traffic
1,425
2009 count
Owner
State
State Highway Agency

About this bridge

S Br Ingalsbe Slgh over South Br Ingalsbe Slough is a concrete slab carrying S Br Ingalsbe Slgh over South Br Ingalsbe Slough in Merced County, California. It was built in 1926 and reconstructed in 1988, so it is 99 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 1,425 vehicles a day, roughly 13% of them trucks, projected to reach 2,664 by 2046. The structure is 20 ft (6.1 m) long and 44 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesS Br Ingalsbe Slgh
CrossesSouth Br Ingalsbe Slough
Location10-MER-059-31.25
RouteState Highway 59
Coordinates37.51118, -120.46876
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
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 inspectionMay 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.1 US tons
Inventory rating22.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length20 ft (6.1 m)
Longest span19 ft (5.8 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,425 (2009)
Projected traffic2,664 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 S Br Ingalsbe Slgh over South Br Ingalsbe Slough built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1988.

What condition is S Br Ingalsbe Slgh over South Br Ingalsbe Slough 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 May 2024.

How much traffic does S Br Ingalsbe Slgh over South Br Ingalsbe Slough carry?

About 1,425 vehicles per day (2009 count), of which roughly 13% are trucks.

How long is S Br Ingalsbe Slgh over South Br Ingalsbe Slough?

The structure is 20 ft (6.1 m) long with a longest span of 19 ft (5.8 m) and a deck 44 ft wide.

Who owns S Br Ingalsbe Slgh over South Br Ingalsbe Slough?

It is owned by the State Highway Agency.