US Bridges

Tioga Road over Yosemite Creek

Fair

Mariposa County, California · 7.0 Miles East of El Port · Structure no. 8800027P0000000

Built
1960
65 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
82 ft
3 main spans
Daily traffic
2,041
2022 count
Owner
Federal
National Park Service

About this bridge

Tioga Road over Yosemite Creek is a concrete continuous tee beam carrying Tioga Road over Yosemite Creek in Mariposa County, California. It was built in 1960, so it is 65 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 2,041 vehicles a day, roughly 1% of them trucks, projected to reach 2,449 by 2042. The structure is 82 ft (25 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesTioga Road
CrossesYosemite Creek
Location7.0 Miles East of El Port
RouteFederal Lands Road 17
CountyMariposa County
StateCalifornia
Coordinates37.85202, -119.57525
Functional classRural Minor Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length82 ft (25 m)
Longest span40 ft (12.2 m)
Deck width34 ft (10.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,041 (2022)
Projected traffic2,449 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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$21,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Tioga Road over Yosemite Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Tioga Road over Yosemite 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 Tioga Road over Yosemite Creek carry?

About 2,041 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Tioga Road over Yosemite Creek?

The structure is 82 ft (25 m) long with a longest span of 40 ft (12.2 m) and a deck 34 ft wide.

Who owns Tioga Road over Yosemite Creek?

It is owned by the National Park Service.