US Bridges

SR 91 Tpk SB 277.1 over Blackstill Lake RD

Good

Lake County, Florida · 2MI S of N Hancock RD · Structure no. 110611

Built
2023
2 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
32,450
2021 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR 91 Tpk SB 277.1 over Blackstill Lake RD is a prestressed concrete stringer/multi-beam or girder carrying SR 91 Tpk SB 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 32,450 vehicles a day, roughly 22% of them trucks, projected to reach 56,301 by 2042. The structure is 54 ft (16.5 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 91 Tpk SB 277.1
CrossesBlackstill Lake RD
Location2MI S of N Hancock RD
RouteState Highway 91
CountyLake County
StateFlorida
Coordinates28.57596, -81.70057
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.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo 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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.8 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 length54 ft (16.5 m)
Longest span54 ft (16.5 m)
Deck width37 ft (11.3 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,450 (2021)
Projected traffic56,301 by 2042
Trucks22%
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 SB 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 SB 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 SB 277.1 over Blackstill Lake RD carry?

About 32,450 vehicles per day (2021 count), of which roughly 22% are trucks.

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

The structure is 54 ft (16.5 m) long with a longest span of 54 ft (16.5 m) and a deck 37 ft wide.

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

It is owned by the State Toll Authority.