US Bridges

NB I-95 (SR-9) over SR-91 (flas. Turnpike)

Good

Martin County, Florida · 1.5 MI N/O SW Kanner HWY · Structure no. 890122

Built
1987
38 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
390 ft
4 main spans
Daily traffic
37,250
2023 count
Owner
State
State Highway Agency

About this bridge

NB I-95 (SR-9) over SR-91 (flas. Turnpike) is a prestressed concrete stringer/multi-beam or girder carrying NB I-95 (SR-9) over SR-91 (flas. Turnpike) 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 37,250 vehicles a day, roughly 14% of them trucks, projected to reach 64,629 by 2045. The structure is 390 ft (118.8 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNB I-95 (SR-9)
CrossesSR-91 (flas. Turnpike)
Location1.5 MI N/O SW Kanner HWY
RouteInterstate 95
CountyMartin County
StateFlorida
Coordinates27.12517, -80.27984
Functional classUrban Principal Arterial - Interstate

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length390 ft (118.8 m)
Longest span113 ft (34.3 m)
Deck width67 ft (20.4 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,250 (2023)
Projected traffic64,629 by 2045
Trucks14%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 NB I-95 (SR-9) over SR-91 (flas. Turnpike) built?

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

What condition is NB I-95 (SR-9) over SR-91 (flas. Turnpike) 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 December 2024.

How much traffic does NB I-95 (SR-9) over SR-91 (flas. Turnpike) carry?

About 37,250 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is NB I-95 (SR-9) over SR-91 (flas. Turnpike)?

The structure is 390 ft (118.8 m) long with a longest span of 113 ft (34.3 m) and a deck 67 ft wide.

Who owns NB I-95 (SR-9) over SR-91 (flas. Turnpike)?

It is owned by the State Highway Agency.