US Bridges

Flamingo RD over Coyote Creek

Fair

Marin County, California · 0.17 MI N Marine Ave · Structure no. 27C0128

Built
1964
61 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
72 ft
3 main spans
Daily traffic
1,705
2001 count
Owner
County
County Highway Agency

About this bridge

Flamingo RD over Coyote Creek is a concrete continuous slab carrying Flamingo RD over Coyote Creek in Marin County, California. It was built in 1964, so it is 61 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 1,705 vehicles a day, roughly 2% of them trucks, projected to reach 2,029 by 2043. The structure is 72 ft (21.8 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFlamingo RD
CrossesCoyote Creek
Location0.17 MI N Marine Ave
RouteCounty Highway 0
Coordinates37.87852, -122.52649
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
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length72 ft (21.8 m)
Longest span23 ft (7 m)
Deck width42 ft (12.8 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,705 (2001)
Projected traffic2,029 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Flamingo RD over Coyote Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Flamingo RD over Coyote 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 2023.

How much traffic does Flamingo RD over Coyote Creek carry?

About 1,705 vehicles per day (2001 count), of which roughly 2% are trucks.

How long is Flamingo RD over Coyote Creek?

The structure is 72 ft (21.8 m) long with a longest span of 23 ft (7 m) and a deck 42 ft wide.

Who owns Flamingo RD over Coyote Creek?

It is owned by the County Highway Agency.