US Bridges

SR-91 Tpk NB130.75 over ST Lucie Canal

Good

Martin County, Florida · 3 Miles S of SR 714 Exit · Structure no. 891000

Built
2003
22 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
2,989 ft
1 main span
Daily traffic
26,350
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR-91 Tpk NB130.75 over ST Lucie Canal is a prestressed concrete stringer/multi-beam or girder carrying SR-91 Tpk NB130.75 over ST Lucie Canal in Martin County, Florida. It was built in 2003, so it is 22 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 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 26,350 vehicles a day, roughly 20% of them trucks, projected to reach 45,717 by 2042. The structure is 2,989 ft (911.1 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR-91 Tpk NB130.75
CrossesST Lucie Canal
Location3 Miles S of SR 714 Exit
RouteState Highway 91
CountyMartin County
StateFlorida
Coordinates27.11776, -80.27477
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.5 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+20 approach)
Design loadHS 20
Structure length2,989 ft (911.1 m)
Longest span156 ft (47.5 m)
Deck width59 ft (18 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,350 (2023)
Projected traffic45,717 by 2042
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR-91 Tpk NB130.75 over ST Lucie Canal built?

It was built in 2003, making it 22 years old in 2025.

What condition is SR-91 Tpk NB130.75 over ST Lucie Canal 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 NB130.75 over ST Lucie Canal carry?

About 26,350 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is SR-91 Tpk NB130.75 over ST Lucie Canal?

The structure is 2,989 ft (911.1 m) long with a longest span of 156 ft (47.5 m) and a deck 59 ft wide.

Who owns SR-91 Tpk NB130.75 over ST Lucie Canal?

It is owned by the State Toll Authority.