US Bridges

Sky Ranch Road over Siphon Mid Ditch

Good

Madera County, California · No Data Entered · Structure no. 051551000020801

Built
2015
10 years old
Condition
Good
inspected July 2023
Type
Slab
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
100
Owner
Federal
U.S. Forest Service

About this bridge

Sky Ranch Road over Siphon Mid Ditch is a prestressed concrete slab carrying Sky Ranch Road over Siphon Mid Ditch in Madera County, California. It was built in 2015, so it is 10 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 150 by 2045. The structure is 68 ft (20.8 m) long and 28 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesSky Ranch Road
CrossesSiphon Mid Ditch
LocationNo Data Entered
RouteFederal Lands Road 6S01
Coordinates37.4167, -119.5657
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length68 ft (20.8 m)
Longest span65 ft (19.9 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (—)
Projected traffic150 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sky Ranch Road over Siphon Mid Ditch built?

It was built in 2015, making it 10 years old in 2025.

What condition is Sky Ranch Road over Siphon Mid Ditch 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 July 2023.

How much traffic does Sky Ranch Road over Siphon Mid Ditch carry?

About 100 vehicles per day (latest count), of which roughly 5% are trucks.

How long is Sky Ranch Road over Siphon Mid Ditch?

The structure is 68 ft (20.8 m) long with a longest span of 65 ft (19.9 m) and a deck 28 ft wide.

Who owns Sky Ranch Road over Siphon Mid Ditch?

It is owned by the U.S. Forest Service.