US Bridges

Vly-Frd-Frkln Sch over Estero Americano

Fair

Marin County, California · 0.85 MI S of S.R. 1 · Structure no. 27C0125

Built
1961
64 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
198 ft
7 main spans
Daily traffic
100
1973 count
Owner
County
County Highway Agency

About this bridge

Vly-Frd-Frkln Sch over Estero Americano is a concrete continuous slab carrying Vly-Frd-Frkln Sch over Estero Americano in Marin County, California. It was built in 1961, so it is 64 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 100 vehicles a day, roughly 8% of them trucks, projected to reach 220 by 2046. The structure is 198 ft (60.4 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesVly-Frd-Frkln Sch
CrossesEstero Americano
Location0.85 MI S of S.R. 1
RouteCounty Highway 0
CountyMarin County
StateCalifornia
Coordinates38.30962, -122.93609
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length198 ft (60.4 m)
Longest span28 ft (8.5 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1973)
Projected traffic220 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Vly-Frd-Frkln Sch over Estero Americano built?

It was built in 1961, making it 64 years old in 2025.

What condition is Vly-Frd-Frkln Sch over Estero Americano 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 Vly-Frd-Frkln Sch over Estero Americano carry?

About 100 vehicles per day (1973 count), of which roughly 8% are trucks.

How long is Vly-Frd-Frkln Sch over Estero Americano?

The structure is 198 ft (60.4 m) long with a longest span of 28 ft (8.5 m) and a deck 32 ft wide.

Who owns Vly-Frd-Frkln Sch over Estero Americano?

It is owned by the County Highway Agency.