US Bridges

SR91 N/S Tpk 126.5 over Phipp Canal

Fair

Martin County, Florida · 1.0MI North of SR-708 · Structure no. 890082

Built
1957
68 years old, rebuilt 1990
Condition
Fair
inspected December 2023
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
52,700
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR91 N/S Tpk 126.5 over Phipp Canal is a concrete slab carrying SR91 N/S Tpk 126.5 over Phipp Canal in Martin County, Florida. It was built in 1957 and reconstructed in 1990, so it is 68 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 52,700 vehicles a day, roughly 20% of them trucks, projected to reach 91,434 by 2042. The structure is 80 ft (24.4 m) long and 91 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesSR91 N/S Tpk 126.5
CrossesPhipp Canal
Location1.0MI North of SR-708
RouteState Highway 91
CountyMartin County
StateFlorida
Coordinates27.05894, -80.24108
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.4 US tons
Inventory rating33.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width91 ft (27.7 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,700 (2023)
Projected traffic91,434 by 2042
Trucks20%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed11.2 mi (18 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR91 N/S Tpk 126.5 over Phipp Canal built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1990.

What condition is SR91 N/S Tpk 126.5 over Phipp Canal 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 December 2023.

How much traffic does SR91 N/S Tpk 126.5 over Phipp Canal carry?

About 52,700 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is SR91 N/S Tpk 126.5 over Phipp Canal?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 91 ft wide.

Who owns SR91 N/S Tpk 126.5 over Phipp Canal?

It is owned by the State Toll Authority.