US Bridges

US-41 (SR-45) over Roberts Bay

Good

Sarasota County, Florida · 0.3MI N of Bus US-41 · Structure no. 170142

Built
1964
61 years old, rebuilt 1986
Condition
Good
inspected March 2023
Type
Slab
Prestressed Concrete
Length
157 ft
5 main spans
Daily traffic
43,000
2023 count
Owner
State
State Highway Agency

About this bridge

US-41 (SR-45) over Roberts Bay is a prestressed concrete slab carrying US-41 (SR-45) over Roberts Bay in Sarasota County, Florida. It was built in 1964 and reconstructed in 1986, so it is 61 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 43,000 vehicles a day, roughly 5% of them trucks, projected to reach 74,605 by 2042. The structure is 157 ft (47.9 m) long and 126 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesUS-41 (SR-45)
CrossesRoberts Bay
Location0.3MI N of Bus US-41
RouteU.S. Route 41
StateFlorida
Coordinates27.11284, -82.4472
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.5 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length157 ft (47.9 m)
Longest span33 ft (10.1 m)
Deck width126 ft (38.5 m)
Roadway width84 ft (25.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43,000 (2023)
Projected traffic74,605 by 2042
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$21,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US-41 (SR-45) over Roberts Bay built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1986.

What condition is US-41 (SR-45) over Roberts Bay in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does US-41 (SR-45) over Roberts Bay carry?

About 43,000 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is US-41 (SR-45) over Roberts Bay?

The structure is 157 ft (47.9 m) long with a longest span of 33 ft (10.1 m) and a deck 126 ft wide.

Who owns US-41 (SR-45) over Roberts Bay?

It is owned by the State Highway Agency.