Marion County, FL

78 public highway bridges

Marion County Bridge Snapshot

Marion County, Florida contains 78 public highway bridges in the FHWA National Bridge Inventory. Roughly 42.3% are rated “Good,” 20.5% “Fair,” 2.6% “Poor,” and 2.6% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in FL are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

78

Total Bridges

42.3%

Good

2.6%

Poor

2.6%

Structurally Deficient

Condition Distribution

Good

42.3% (33)

Fair

20.5% (16)

Poor

2.6% (2)

SD

2.6% (2)

All Bridges (78)

Sort:

I-75

Over: CR-484

I-75 SB over CR-484, Marion, FL

Built 1964 ADT: 7,700

I-75

Over: SR-40

I-75 SB over SR-40, Marion, FL

Built 1964 ADT: 31,000

I-75

Over: US-27

I-75 SB over US-27, Marion, FL

Built 1964 ADT: 21,500

I-75

Over: US-27

I-75 NB over US-27, Marion, FL

Built 1964 ADT: 21,500

I-75

Over: SR-326

I-75 SB over SR-326, Marion, FL

Built 1964 ADT: 20,500

US301-441

Over: NW 8th Ave-SCLRR

US-441-NW8th Ave SCLRR, Marion, FL

Built 1951 ADT: 1,000

CR-316

Over: I-75

CR-316 over I-75, Marion, FL

Built 1964 ADT: 68,500

CR-320

Over: I-75

CR-320 over I-75, Marion, FL

Built 1964 ADT: 72,500

I-75

Over: CR-329

I-75 SB over CR-329, Marion, FL

Built 1964 ADT: 1,500

I-75

Over: CR-329

I-75 NB OVER CR-329, Marion, FL

Built 1964 ADT: 1,500

I-75

Over: CR-318

I-75 SB over CR-318, Marion, FL

Built 1964 ADT: 4,700

I-75 NB

Over: CR-318

I-75 NB over CR-318, Marion, FL

Built 1964 ADT: 4,700

US-441 NB

Over: US-301 SB

US-441 NB - US-301 SB, Marion, FL

Built 1964 ADT: 4,950

I-75

Over: SR-326

I-75 NB over SR-326, Marion, FL

Built 1964 ADT: 20,500

I-75

Over: CR-484

I-75 NB over CR-484, Marion, FL

Built 1964 ADT: 7,700

SW 66th St

Over: I-75

SW 66th St over I-75, Marion, FL

Built 1964 ADT: 83,246

NW 63rd Street

Over: I-75

Leroy Baldwin Rd ovr I-75, Marion, FL

Built 1964 ADT: 80,500

Martin Road

Over: I-75

Martin Road over I-75, Marion, FL

Built 1964 ADT: 68,500

I-75

Over: SR-200

I-75 over SR-200, Marion, FL

Built 1996 ADT: 40,837

I-75

Over: SW 20th ST (CR-A225)

I-75over SW20th ST/CRA225, Marion, FL

Built 1996 ADT: 11,100

I-75

Over: NW 193rd St

I-75 SB over NW 193rd St, Marion, FL

Built 1997 ADT: 450

I-75 NB

Over: NW 193rd St

I-75 NB over NW 193rd St, Marion, FL

Built 1997 ADT: 450

SR 464

Over: CSX Railroad

SW 17th St over SCLRR, Marion, FL

Built 2009 ADT: 250

I-75

Over: SR-40

I-75 NB over SR-40, Marion, FL

Built 1964 ADT: 32,500

NW 120th Street

Over: I-75

NW 120th Street over I-75, Marion, FL

Built 1964 ADT: 68,500

NE 36th Avenue

Over: Access Rd SE

0.8 Mile North of SR-40, Marion, FL

Built 2021 ADT: 101

SW 43rd Street Rd.

Over: I-75

0.38 Mi East of SR-200, Marion, FL

Built 2012 ADT: 101,000

SE 137th Ave Road

Over: Creek

4.0 mi N of SE 95th St Rd, Marion, FL

Built 1940 Load: 18.8 t ADT: 3,000

CR-315

Over: Orange Creek

1.2 miles North of CR-21, Marion, FL

Built 1961 Load: 24.4 t ADT: 3,500

CR-484

Over: Rainbow River

0.8 Mile East of US-41, Marion, FL

Built 1927 Load: 27.8 t ADT: 11,300

CR-316

Over: Ocklawaha River

4.0Mi E of CR-315, Marion, FL

Built 1969 Load: 29.4 t ADT: 2,100

SR-40

Over: Ocklawaha River

SR-40 - Ocklawaha River, Marion, FL

Built 1972 Load: 31.7 t ADT: 17,500

SR-40

Over: Creek

1 Mi. E of CR-35, Marion, FL

Built 1958 Load: 32.7 t ADT: 13,000

SR-492 EB

Over: CSX RR

SR-492 EB - CSX, Marion, FL

Built 1988 Load: 32.7 t ADT: 9,500

SR-200 EB

Over: SCL RR

SR-200 EB over SCL RR, Marion, FL

Built 1967 Load: 35.7 t ADT: 12,750

CR-464

Over: Oklawaha River

4.2 Mi Northeast of CR-25, Marion, FL

Built 1990 Load: 36.3 t ADT: 4,400

SR-200 WB

Over: SCL RR

SR-200 WB over SCLRR, Marion, FL

Built 1985 Load: 37.6 t ADT: 12,750

SR-40

Over: SCLRR

SR-40 over SCLRR, Marion, FL

Built 1983 Load: 40.0 t ADT: 20,500

SR-326

Over: Creek

1.0 Mi. N of SR-40, Marion, FL

Built 1969 Load: 43.6 t ADT: 3,600

SR-19

Over: Juniper Creek

SR-19 over Juniper Creek, Marion, FL

Built 2010 Load: 48.6 t ADT: 1,850

US27/301/441

Over: SCLRR

US-441 over SCLRR, Marion, FL

Built 1951 Load: 52.3 t ADT: 29,000

NE148th Terrace Rd

Over: Mill Creek

2.2 miles North of CR-316, Marion, FL

Built 1940 Load: 52.3 t ADT: 414

CR-314

Over: Canal

1.3 miles North of SR-40, Marion, FL

Built 1950 Load: 77.0 t ADT: 3,100

CR-25A

Over: SCL Railroad

3.9 miles North of SR-326, Marion, FL

Built 1925 Load: 15.8 t ADT: 27,500

SW 127TH AVENUE

Over: DRAINAGE CANAL

0.13 MI. FROM AIRFIELD ON, Marion, FL

Built 1975 Load: 17.4 t ADT: 3

SW 312TH STREET

Over: DRAINAGE CANAL

0.25 MI. FROM AIRFIELD ON, Marion, FL

Built 1975 Load: 17.7 t ADT: 3

Service Rd

Over: Canal

Silver Springs State Park, Marion, FL

Built 1970 Load: 24.1 t ADT: 20

CR-42

Over: Oklawaha River

3 Miles West of CR-452, Marion, FL

Built 1987 Load: 25.1 t ADT: 8,700

CR-21

Over: Orange Creek

0.5 mile North of CR-315, Marion, FL

Built 1980 Load: 30.8 t ADT: 3,400

SR-492 WB

Over: CSX RR

SR-492 WB - CSX RR, Marion, FL

Built 1988 Load: 32.7 t ADT: 9,500

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026