US Bridges

SR-76(KANNER HWY ) over SR-91 (fl. Tpk.)

Good

Martin County, Florida · .25MI W of I-95 · Structure no. 890126

Built
1987
38 years old
Condition
Good
inspected February 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
188 ft
2 main spans
Daily traffic
23,000
2023 count
Owner
State
State Highway Agency

About this bridge

SR-76(KANNER HWY ) over SR-91 (fl. Tpk.) is a prestressed concrete stringer/multi-beam or girder carrying SR-76(KANNER HWY ) over SR-91 (fl. Tpk.) in Martin County, Florida. It was built in 1987, so it is 38 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 23,000 vehicles a day, roughly 9% of them trucks, projected to reach 39,905 by 2042. The structure is 188 ft (57.3 m) long and 93 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesSR-76(KANNER HWY )
CrossesSR-91 (fl. Tpk.)
Location.25MI W of I-95
RouteState Highway 76
CountyMartin County
StateFlorida
Coordinates27.10531, -80.2651
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating37.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length188 ft (57.3 m)
Longest span94 ft (28.7 m)
Deck width93 ft (28.3 m)
Roadway width90 ft (27.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,000 (2023)
Projected traffic39,905 by 2042
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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-76(KANNER HWY ) over SR-91 (fl. Tpk.) built?

It was built in 1987, making it 38 years old in 2025.

What condition is SR-76(KANNER HWY ) over SR-91 (fl. Tpk.) 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 February 2025.

How much traffic does SR-76(KANNER HWY ) over SR-91 (fl. Tpk.) carry?

About 23,000 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SR-76(KANNER HWY ) over SR-91 (fl. Tpk.)?

The structure is 188 ft (57.3 m) long with a longest span of 94 ft (28.7 m) and a deck 93 ft wide.

Who owns SR-76(KANNER HWY ) over SR-91 (fl. Tpk.)?

It is owned by the State Highway Agency.