US Bridges

Greeley Hill Road over Smith Creek

Fair

Mariposa County, California · 1.7 MI Ne/O Holtzel RD · Structure no. 40C0017

Built
1956
69 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
610
2004 count
Owner
County
County Highway Agency

About this bridge

Greeley Hill Road over Smith Creek is a concrete continuous culvert carrying Greeley Hill Road over Smith Creek in Mariposa County, California. It was built in 1956, so it is 69 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 6 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 610 vehicles a day, roughly 3% of them trucks, projected to reach 1,937 by 2046. The structure is 25 ft (7.6 m) long and 36 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesGreeley Hill Road
CrossesSmith Creek
Location1.7 MI Ne/O Holtzel RD
RouteCounty Highway 0
Coordinates37.75461, -120.1087
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span11 ft (3.5 m)
Deck width36 ft (11 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic610 (2004)
Projected traffic1,937 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 Greeley Hill Road over Smith Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Greeley Hill Road over Smith 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 June 2024.

How much traffic does Greeley Hill Road over Smith Creek carry?

About 610 vehicles per day (2004 count), of which roughly 3% are trucks.

How long is Greeley Hill Road over Smith Creek?

The structure is 25 ft (7.6 m) long with a longest span of 11 ft (3.5 m) and a deck 36 ft wide.

Who owns Greeley Hill Road over Smith Creek?

It is owned by the County Highway Agency.