US Bridges

Martin Road over I-75

Fair

Marion County, Florida · Martin Road over I-75 · Structure no. 360050

Built
1964
61 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
234 ft
4 main spans
Daily traffic
450
2022 count
Owner
State
State Highway Agency

About this bridge

Martin Road over I-75 is a prestressed concrete stringer/multi-beam or girder carrying Martin Road over I-75 in Marion County, Florida. It was built in 1964, so it is 61 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 450 vehicles a day, roughly 7% of them trucks, projected to reach 781 by 2044. The structure is 234 ft (71.3 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesMartin Road
CrossesI-75
LocationMartin Road over I-75
RouteCounty Highway 0
CountyMarion County
StateFlorida
Coordinates29.29618, -82.20374
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
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 rating76.3 US tons
Inventory rating45.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length234 ft (71.3 m)
Longest span73 ft (22.3 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2022)
Projected traffic781 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 Martin Road over I-75 built?

It was built in 1964, making it 61 years old in 2025.

What condition is Martin Road over I-75 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 May 2023.

How much traffic does Martin Road over I-75 carry?

About 450 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Martin Road over I-75?

The structure is 234 ft (71.3 m) long with a longest span of 73 ft (22.3 m) and a deck 34 ft wide.

Who owns Martin Road over I-75?

It is owned by the State Highway Agency.