SR 91 Tpk NB 277.1 over Blackstill Lake RD

Good

Lake County, Florida · 3.1MI N of Orange CO Line · Structure no. 110609

Built: 2023; 2 years old
Condition: Good; inspected November 2023
Type: Stringer/Multi-beam or Girder; Prestressed Concrete
Length: 83 ft; 1 main span
Daily traffic: 37,950; 2022 count
Owner: Toll Authority; State Toll Authority

About this bridge

SR 91 Tpk NB 277.1 over Blackstill Lake RD is a prestressed concrete stringer/multi-beam or girder carrying SR 91 Tpk NB 277.1 over Blackstill Lake RD in Lake County, Florida. It was built in 2023, so it is 2 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 37,950 vehicles a day, roughly 20% of them trucks, projected to reach 65,842 by 2042. The structure is 83 ft (25.3 m) long and 74 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

No coordinates are recorded for this structure.

CarriesSR 91 Tpk NB 277.1

CrossesBlackstill Lake RD

Location3.1MI N of Orange CO Line

RouteState Highway 91

CountyLake County

StateFlorida

Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

Component	Rating	Meaning
Deck	8 Very Good	No problems noted.
Superstructure	8 Very Good	No problems noted.
Substructure	8 Very Good	No problems noted.

Last inspectionNovember 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourBridge not over waterway

Structural evaluation8: Equal to present desirable criteria

Deck geometry9: Superior to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating55.4 US tons

Inventory rating42.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder

MaterialPrestressed Concrete

DeckConcrete, cast-in-place

Main spans1

Design loadHL 93

Structure length83 ft (25.3 m)

Longest span83 ft (25.3 m)

Deck width74 ft (22.6 m)

Roadway width72 ft (21.8 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,950 (2022)

Projected traffic65,842 by 2042

Trucks20%

Lanes on structure2

Traffic directionOne-way traffic

CarriesHighway

CrossesHighway

Detour if closed1.2 mi (2 km)

TollOn a toll road

National Highway SystemYes

Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority

Maintained byState Toll Authority

Historic statusNot eligible for the National Register of Historic Places

Work proposedNone recorded

Estimated improvement cost—

NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 91 Tpk NB 277.1 over Blackstill Lake RD built?

It was built in 2023, making it 2 years old in 2025.

What condition is SR 91 Tpk NB 277.1 over Blackstill Lake RD 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 November 2023.

How much traffic does SR 91 Tpk NB 277.1 over Blackstill Lake RD carry?

About 37,950 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is SR 91 Tpk NB 277.1 over Blackstill Lake RD?

The structure is 83 ft (25.3 m) long with a longest span of 83 ft (25.3 m) and a deck 74 ft wide.

Who owns SR 91 Tpk NB 277.1 over Blackstill Lake RD?

It is owned by the State Toll Authority.