US Bridges

Stinson Beach Road over Easkoot Creek

Fair

Marin County, California · West from US Route 101 on · Structure no. 8140001P0000000

Built
1959
66 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
150
2019 count
Owner
Federal
National Park Service

About this bridge

Stinson Beach Road over Easkoot Creek is a concrete slab carrying Stinson Beach Road over Easkoot Creek in Marin County, California. It was built in 1959, so it is 66 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 1% of them trucks, projected to reach 200 by 2039. The structure is 33 ft (10.2 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesStinson Beach Road
CrossesEaskoot Creek
LocationWest from US Route 101 on
RouteFederal Lands Road 205
CountyMarin County
StateCalifornia
Coordinates37.89825, -122.64147
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10.2 m)
Longest span28 ft (8.5 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2019)
Projected traffic200 by 2039
Trucks1%
Lanes on structure2
Traffic directionTwo-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$27,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Stinson Beach Road over Easkoot Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is Stinson Beach Road over Easkoot 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 July 2024.

How much traffic does Stinson Beach Road over Easkoot Creek carry?

About 150 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Stinson Beach Road over Easkoot Creek?

The structure is 33 ft (10.2 m) long with a longest span of 28 ft (8.5 m) and a deck 29 ft wide.

Who owns Stinson Beach Road over Easkoot Creek?

It is owned by the National Park Service.