US Bridges

I-275 SB over US-19/WILLIAMS Bayou

Fair

Manatee County, Florida · 2.1 MI West of US-41 · Structure no. 130128

Built
1984
41 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
912 ft
10 main spans
Daily traffic
51,000
2024 count
Owner
State
State Highway Agency

About this bridge

I-275 SB over US-19/WILLIAMS Bayou is a prestressed concrete stringer/multi-beam or girder carrying I-275 SB over US-19/WILLIAMS Bayou in Manatee County, Florida. It was built in 1984, so it is 41 years old, younger 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 51,000 vehicles a day, roughly 7% of them trucks, projected to reach 88,485 by 2044. The structure is 912 ft (278 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-275 SB
CrossesUS-19/WILLIAMS Bayou
Location2.1 MI West of US-41
RouteInterstate 275
CountyManatee County
StateFlorida
Coordinates27.58099, -82.5776
Functional classRural Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating29.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20 + Mod
Structure length912 ft (278 m)
Longest span132 ft (40.2 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,000 (2024)
Projected traffic88,485 by 2044
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and waterway
Detour if closed0.6 mi (1 km)
TollOn an Interstate toll segment under Secretarial agreement
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I-275 SB over US-19/WILLIAMS Bayou built?

It was built in 1984, making it 41 years old in 2025.

What condition is I-275 SB over US-19/WILLIAMS 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 August 2024.

How much traffic does I-275 SB over US-19/WILLIAMS Bayou carry?

About 51,000 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is I-275 SB over US-19/WILLIAMS Bayou?

The structure is 912 ft (278 m) long with a longest span of 132 ft (40.2 m) and a deck 43 ft wide.

Who owns I-275 SB over US-19/WILLIAMS Bayou?

It is owned by the State Highway Agency.