US Bridges

Trail over Tenaya Creek

Fair

Mariposa County, California · Approximately 0.4 Miles N · Structure no. 8800010S0000000

Built
1928
97 years old
Condition
Fair
inspected September 2024
Type
Arch - Deck
Concrete
Length
57 ft
1 main span
Daily traffic
1
2019 count
Owner
Federal
National Park Service

About this bridge

Trail over Tenaya Creek is a concrete arch - deck carrying Trail over Tenaya Creek in Mariposa County, California. It was built in 1928, so it is 97 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 1 vehicles a day, projected to reach 2 by 2039. The structure is 57 ft (17.4 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTrail
CrossesTenaya Creek
LocationApproximately 0.4 Miles N
RouteFederal Lands Road 0
CountyMariposa County
StateCalifornia
Coordinates37.74183, -119.55828
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31 US tons
Inventory rating18 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length57 ft (17.4 m)
Longest span57 ft (17.4 m)
Deck width42 ft (12.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1 (2019)
Projected traffic2 by 2039
Trucks0%
Lanes on structure2
Traffic directionHighway traffic not carried
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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$23,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Trail over Tenaya Creek built?

It was built in 1928, making it 97 years old in 2025.

What condition is Trail over Tenaya 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 Trail over Tenaya Creek carry?

About 1 vehicles per day (2019 count).

How long is Trail over Tenaya Creek?

The structure is 57 ft (17.4 m) long with a longest span of 57 ft (17.4 m) and a deck 42 ft wide.

Who owns Trail over Tenaya Creek?

It is owned by the National Park Service.