US Bridges

SR91 Tpk N/S 73.05 over Hillsboro Canal

Good

Broward County, Florida · Palm Beach/Browrd CO Line · Structure no. 860184

Built
1956
69 years old, rebuilt 1985
Condition
Good
inspected September 2023
Type
Tee Beam
Concrete
Length
249 ft
6 main spans
Daily traffic
110,900
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR91 Tpk N/S 73.05 over Hillsboro Canal is a concrete tee beam carrying SR91 Tpk N/S 73.05 over Hillsboro Canal in Broward County, Florida. It was built in 1956 and reconstructed in 1985, 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 110,900 vehicles a day, roughly 14% of them trucks, projected to reach 192,412 by 2042. The structure is 249 ft (75.9 m) long and 115 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

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CarriesSR91 Tpk N/S 73.05
CrossesHillsboro Canal
LocationPalm Beach/Browrd CO Line
RouteState Highway 91
CountyBroward County
StateFlorida
Coordinates26.32783, -80.17022
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 protection7 GoodSome minor problems.
Last inspectionSeptember 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.6 US tons
Inventory rating23.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length249 ft (75.9 m)
Longest span42 ft (12.8 m)
Deck width115 ft (34.9 m)
Roadway width109 ft (33.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110,900 (2023)
Projected traffic192,412 by 2042
Trucks14%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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$190,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR91 Tpk N/S 73.05 over Hillsboro Canal built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1985.

What condition is SR91 Tpk N/S 73.05 over Hillsboro 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 September 2023.

How much traffic does SR91 Tpk N/S 73.05 over Hillsboro Canal carry?

About 110,900 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR91 Tpk N/S 73.05 over Hillsboro Canal?

The structure is 249 ft (75.9 m) long with a longest span of 42 ft (12.8 m) and a deck 115 ft wide.

Who owns SR91 Tpk N/S 73.05 over Hillsboro Canal?

It is owned by the State Toll Authority.