US Bridges

Turner Island RD over West Delta Canal

Good

Merced County, California · 0.4 MI S of Henry Miller · Structure no. 39C0425

Built
2023
2 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
20 ft
4 main spans
Daily traffic
1,595
2008 count
Owner
County
County Highway Agency

About this bridge

Turner Island RD over West Delta Canal is a concrete culvert carrying Turner Island RD over West Delta Canal in Merced County, California. It was built in 2023, so it is 2 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,595 vehicles a day, roughly 41% of them trucks, projected to reach 1,235 by 2044. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesTurner Island RD
CrossesWest Delta Canal
Location0.4 MI S of Henry Miller
RouteCounty Highway 0
CountyMerced County
StateCalifornia
Coordinates37.093, -120.70754
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
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
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 typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span5 ft (1.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,595 (2008)
Projected traffic1,235 by 2044
Trucks41%
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 Turner Island RD over West Delta Canal built?

It was built in 2023, making it 2 years old in 2025.

What condition is Turner Island RD over West Delta Canal 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 November 2024.

How much traffic does Turner Island RD over West Delta Canal carry?

About 1,595 vehicles per day (2008 count), of which roughly 41% are trucks.

How long is Turner Island RD over West Delta Canal?

The structure is 20 ft (6.1 m) long with a longest span of 5 ft (1.6 m).

Who owns Turner Island RD over West Delta Canal?

It is owned by the County Highway Agency.