US Bridges

Incline Road over Dry Creek

Fair

Mariposa County, California · 1.3 MI West of SR 140 · Structure no. 40C0061

Built
1970
55 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
51 ft
3 main spans
Daily traffic
150
1988 count
Owner
County
County Highway Agency

About this bridge

Incline Road over Dry Creek is a steel continuous stringer/multi-beam or girder carrying Incline Road over Dry Creek in Mariposa County, California. It was built in 1970, so it is 55 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 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 150 vehicles a day, roughly 2% of them trucks, projected to reach 320 by 2040. The structure is 51 ft (15.4 m) long and 12 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIncline Road
CrossesDry Creek
Location1.3 MI West of SR 140
RouteCounty Highway 0
Coordinates37.67366, -119.83473
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.3 US tons
Inventory rating47.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, precast panels
Main spans3
Design loadUnknown
Structure length51 ft (15.4 m)
Longest span16 ft (4.8 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (1988)
Projected traffic320 by 2040
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Incline Road over Dry Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Incline Road over Dry 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 September 2023.

How much traffic does Incline Road over Dry Creek carry?

About 150 vehicles per day (1988 count), of which roughly 2% are trucks.

How long is Incline Road over Dry Creek?

The structure is 51 ft (15.4 m) long with a longest span of 16 ft (4.8 m) and a deck 12 ft wide.

Who owns Incline Road over Dry Creek?

It is owned by the County Highway Agency.