US Bridges

Sherlock Road over Saxon Creek

Good

Mariposa County, California · 1.5 MI W of Colorado RD · Structure no. 40C0042

Built
1972
53 years old
Condition
Good
inspected September 2023
Type
Slab
Concrete Continuous
Length
56 ft
2 main spans
Daily traffic
50
1988 count
Owner
County
County Highway Agency

About this bridge

Sherlock Road over Saxon Creek is a concrete continuous slab carrying Sherlock Road over Saxon Creek in Mariposa County, California. It was built in 1972, so it is 53 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 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 50 vehicles a day, projected to reach 160 by 2040. The structure is 56 ft (17.1 m) long and 25 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesSherlock Road
CrossesSaxon Creek
Location1.5 MI W of Colorado RD
RouteCounty Highway 0
CountyMariposa County
StateCalifornia
Coordinates37.56647, -119.98534
Functional classRural Minor 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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating80 US tons
Inventory rating48.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length56 ft (17.1 m)
Longest span28 ft (8.5 m)
Deck width25 ft (7.6 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1988)
Projected traffic160 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Sherlock Road over Saxon Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Sherlock Road over Saxon Creek 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 September 2023.

How much traffic does Sherlock Road over Saxon Creek carry?

About 50 vehicles per day (1988 count).

How long is Sherlock Road over Saxon Creek?

The structure is 56 ft (17.1 m) long with a longest span of 28 ft (8.5 m) and a deck 25 ft wide.

Who owns Sherlock Road over Saxon Creek?

It is owned by the County Highway Agency.