US Bridges

SR 91 Tpk 79.75 over Lateral Canal #38

Good

Palm Beach County, Florida · 2.0 MI South of SR-806 · Structure no. 930215

Built
1956
69 years old, rebuilt 2002
Condition
Good
inspected October 2023
Type
Tee Beam
Concrete
Length
82 ft
1 main span
Daily traffic
103,300
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR 91 Tpk 79.75 over Lateral Canal #38 is a concrete tee beam carrying SR 91 Tpk 79.75 over Lateral Canal #38 in Palm Beach County, Florida. It was built in 1956 and reconstructed in 2002, so it is 69 years old, older 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 103,300 vehicles a day, roughly 14% of them trucks, projected to reach 179,226 by 2042. The structure is 82 ft (25 m) long and 116 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR 91 Tpk 79.75
CrossesLateral Canal #38
Location2.0 MI South of SR-806
RouteState Highway 91
StateFlorida
Coordinates26.42399, -80.17166
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.4 US tons
Inventory rating22.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20 + Mod
Structure length82 ft (25 m)
Longest span48 ft (14.6 m)
Deck width116 ft (35.4 m)
Roadway width111 ft (33.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic103,300 (2023)
Projected traffic179,226 by 2042
Trucks14%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$180,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 91 Tpk 79.75 over Lateral Canal #38 built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2002.

What condition is SR 91 Tpk 79.75 over Lateral Canal #38 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 October 2023.

How much traffic does SR 91 Tpk 79.75 over Lateral Canal #38 carry?

About 103,300 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR 91 Tpk 79.75 over Lateral Canal #38?

The structure is 82 ft (25 m) long with a longest span of 48 ft (14.6 m) and a deck 116 ft wide.

Who owns SR 91 Tpk 79.75 over Lateral Canal #38?

It is owned by the State Toll Authority.