US Bridges

SR 91 Rmp 255.6 over US 17 SR 500 (obt)

Fair

Orange County, Florida · 0.25 MI South of SR 528 · Structure no. 750026

Built
1963
62 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
164 ft
3 main spans
Daily traffic
15,200
2022 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR 91 Rmp 255.6 over US 17 SR 500 (obt) is a prestressed concrete stringer/multi-beam or girder carrying SR 91 Rmp 255.6 over US 17 SR 500 (obt) in Orange 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 15,200 vehicles a day, roughly 11% of them trucks, projected to reach 26,372 by 2042. The structure is 164 ft (50 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 91 Rmp 255.6
CrossesUS 17 SR 500 (obt)
Location0.25 MI South of SR 528
RouteState Highway 91
CountyOrange County
StateFlorida
Coordinates28.43186, -81.40478
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating70.5 US tons
Inventory rating47.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length164 ft (50 m)
Longest span89 ft (27.2 m)
Deck width44 ft (13.4 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,200 (2022)
Projected traffic26,372 by 2042
Trucks11%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes

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 Rmp 255.6 over US 17 SR 500 (obt) built?

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

What condition is SR 91 Rmp 255.6 over US 17 SR 500 (obt) 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 September 2023.

How much traffic does SR 91 Rmp 255.6 over US 17 SR 500 (obt) carry?

About 15,200 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is SR 91 Rmp 255.6 over US 17 SR 500 (obt)?

The structure is 164 ft (50 m) long with a longest span of 89 ft (27.2 m) and a deck 44 ft wide.

Who owns SR 91 Rmp 255.6 over US 17 SR 500 (obt)?

It is owned by the State Toll Authority.