US Bridges

Ferry Road over Maxwell Creek

Fair

Mariposa County, California · In Coulterville · Structure no. 40C0045

Built
1987
38 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
57 ft
2 main spans
Daily traffic
90
2004 count
Owner
County
County Highway Agency

About this bridge

Ferry Road over Maxwell Creek is a concrete continuous slab carrying Ferry Road over Maxwell Creek in Mariposa County, California. It was built in 1987, so it is 38 years old, younger 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 90 vehicles a day, roughly 1% of them trucks, projected to reach 127 by 2042. The structure is 57 ft (17.4 m) long and 25 ft wide. If it were closed, the detour would be 90.1 mi (145 km).

Location

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CarriesFerry Road
CrossesMaxwell Creek
LocationIn Coulterville
RouteCounty Highway 0
CountyMariposa County
StateCalifornia
Coordinates37.71026, -120.19574
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length57 ft (17.4 m)
Longest span27 ft (8.2 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2004)
Projected traffic127 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed90.1 mi (145 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 Ferry Road over Maxwell Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Ferry Road over Maxwell 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 Ferry Road over Maxwell Creek carry?

About 90 vehicles per day (2004 count), of which roughly 1% are trucks.

How long is Ferry Road over Maxwell Creek?

The structure is 57 ft (17.4 m) long with a longest span of 27 ft (8.2 m) and a deck 25 ft wide.

Who owns Ferry Road over Maxwell Creek?

It is owned by the County Highway Agency.