US Bridges

Siesta Drive over Louise Bayou

Fair

Sarasota County, Florida · 0.1 MI West of Higel Ave · Structure no. 175505

Built
1963
62 years old
Condition
Fair
inspected October 2024
Type
Channel Beam
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
230
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Siesta Drive over Louise Bayou is a prestressed concrete channel beam carrying Siesta Drive over Louise Bayou in Sarasota County, Florida. It was built in 1963, so it is 62 years old, older than the Florida average of 41.3 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 230 vehicles a day, roughly 2% of them trucks, projected to reach 399 by 2044. The structure is 37 ft (11.3 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesSiesta Drive
CrossesLouise Bayou
Location0.1 MI West of Higel Ave
RouteCity Street 0
CountySarasota County
StateFlorida
Coordinates27.30247, -82.55803
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.4 US tons
Inventory rating27.7 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span37 ft (11.3 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2024)
Projected traffic399 by 2044
Trucks2%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Siesta Drive over Louise Bayou built?

It was built in 1963, making it 62 years old in 2025.

What condition is Siesta Drive over Louise Bayou 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 October 2024.

How much traffic does Siesta Drive over Louise Bayou carry?

About 230 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Siesta Drive over Louise Bayou?

The structure is 37 ft (11.3 m) long with a longest span of 37 ft (11.3 m) and a deck 22 ft wide.

Who owns Siesta Drive over Louise Bayou?

It is owned by the City or Municipal Highway Agency.