US Bridges

Chilnualna Falls R over Chilnualna Creek

Fair

Mariposa County, California · Vicinity of Wawona. Proc · Structure no. 8800035P0000000

Built
1996
29 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
110 ft
1 main span
Daily traffic
25
2019 count
Owner
Federal
National Park Service

About this bridge

Chilnualna Falls R over Chilnualna Creek is a steel stringer/multi-beam or girder carrying Chilnualna Falls R over Chilnualna Creek in Mariposa County, California. It was built in 1996, so it is 29 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 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 25 vehicles a day, roughly 1% of them trucks, projected to reach 50 by 2039. The structure is 110 ft (33.5 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesChilnualna Falls R
CrossesChilnualna Creek
LocationVicinity of Wawona. Proc
RouteFederal Lands Road 0
CountyMariposa County
StateCalifornia
Coordinates37.54898, -119.63253
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 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 adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating61 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length110 ft (33.5 m)
Longest span107 ft (32.6 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2019)
Projected traffic50 by 2039
Trucks1%
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

OwnerNational Park Service
Maintained byNational Park Service
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 Chilnualna Falls R over Chilnualna Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Chilnualna Falls R over Chilnualna 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 2024.

How much traffic does Chilnualna Falls R over Chilnualna Creek carry?

About 25 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Chilnualna Falls R over Chilnualna Creek?

The structure is 110 ft (33.5 m) long with a longest span of 107 ft (32.6 m) and a deck 16 ft wide.

Who owns Chilnualna Falls R over Chilnualna Creek?

It is owned by the National Park Service.