Nassau County, FL

105 public highway bridges

Nassau County Bridge Snapshot

Nassau County, Florida contains 105 public highway bridges in the FHWA National Bridge Inventory. Roughly 43.8% are rated “Good,” 47.6% “Fair,” 2.9% “Poor,” and 2.9% 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.

105

Total Bridges

43.8%

Good

2.9%

Poor

2.9%

Structurally Deficient

Condition Distribution

Good

43.8% (46)

Fair

47.6% (50)

Poor

2.9% (3)

SD

2.9% (3)

All Bridges (105)

Sort:

I-95 SB (SR-9)

Over: SR-A1A & SR-200

I-95 SB OVER SR-A1A, Nassau, FL

Built 1967 ADT: 20,500

CR-108

Over: I-95 (SR-9)

CR-108 / I-95, Nassau, FL

Built 1968 ADT: 56,500

I-95 NB (SR-9)

Over: SR-A1A & SR-200

I-95 NB OVER SR-A1A, Nassau, FL

Built 1967 ADT: 20,500

I-95 NB (SR-9)

Over: US-17 (SR-5)

I-95 NB / US-17, Nassau, FL

Built 1968 ADT: 4,300

SR-A1A & SR-105

Over: AMELIA ISLAND SERV. RD.

3 MI. N. OF DUVAL CO.LINE, Nassau, FL

Built 1975 ADT: 5,000

I-95 SB (SR-9)

Over: US-17 (SR-5)

I-95 SB / US-17, Nassau, FL

Built 1968 ADT: 4,300

MUSSEL WHITE ROAD

Over: MILLS CREEK

3.7 MI NORTHEAST OF US 1, Nassau, FL

Built 1931 Load: 12.7 t ADT: 1,300

CR 115

Over: CROSS BRANCH

2.2 MI EAST OF CR 121, Nassau, FL

Built 1950 Load: 18.5 t ADT: 1,500

CR 115A

Over: LITTLE ST MARYS RIVER

2.8 MI NORTH OF CR 108, Nassau, FL

Built 1958 Load: 18.5 t ADT: 1,600

STRATTON ROAD

Over: CUSHING CREEK

0.2 MI EAST OF SR 200, Nassau, FL

Built 1931 Load: 18.6 t ADT: 101

SR-115

Over: CUSHING CREEK

0.5 MI. E. OF CALLAHAN, Nassau, FL

Built 1948 Load: 19.0 t ADT: 9,300

SR-115

Over: THOMAS CREEK

ON THE DUVAL CO. LINE, Nassau, FL

Built 1948 Load: 19.0 t ADT: 12,000

CR 121

Over: DUNN CREEK

1.8 MI NORTH OF CR 115, Nassau, FL

Built 1949 Load: 19.2 t ADT: 2,400

CR 115

Over: LITTLE DUNN CREEK

2.9 MI EAST OF CR 121, Nassau, FL

Built 1950 Load: 21.5 t ADT: 1,500

CR 115

Over: MILLS CREEK

2.7MI S OF HENRY SMITH RD, Nassau, FL

Built 1931 Load: 21.9 t ADT: 2,500

CR 108

Over: BRANCH OF DEEP CREEK

0.7 MI NE OF CR 121, Nassau, FL

Built 1950 Load: 23.0 t ADT: 3,400

CR 121

Over: LITTLE DUNN CREEK

3 MILES NORTH OF CR 115, Nassau, FL

Built 1949 Load: 24.1 t ADT: 2,400

CR 108

Over: BRANCH LITTL ST MARYS RV

0.6 MI EAST OF US 1, Nassau, FL

Built 1950 Load: 25.3 t ADT: 3,400

CR121A (MIDDLE RD)

Over: LITTLE ST. MARYS RIVER

0.6 MI NORTH OF CR 108, Nassau, FL

Built 1969 Load: 27.1 t ADT: 450

CR 121A

Over: WILDER CREEK

2.3 MI NORTH OF CR 108, Nassau, FL

Built 1938 Load: 28.8 t ADT: 450

US-1 (SR-15)

Over: KATIE CREEK

1.8 MI. N. OF SR-200, Nassau, FL

Built 1954 Load: 29.4 t ADT: 15,700

I-95 (SBL)

Over: ST MARY'S RIVER

GA-FLA STATE LINE, Nassau, FL

Built 1971 Load: 30.6 t ADT: 54,710

N 14TH ST(CR 105A)

Over: EGANS CREEK

1.7 MI NORTH OF A1A, Nassau, FL

Built 1964 Load: 32.0 t ADT: 3,400

SR-115

Over: MILLS CREEK

2.1 MI. N. OF DUVAL CO., Nassau, FL

Built 1949 Load: 32.3 t ADT: 9,300

US-17 (SR-5)

Over: ST. MARY'S RIVER

FL. - GA. STATE LINE, Nassau, FL

Built 1927 Load: 32.5 t ADT: 4,300

US-1 SB (SR-15)

Over: BRADDOCK CREEK

3 MI. N. OF DUVAL CO., Nassau, FL

Built 1924 Load: 32.7 t ADT: 8,050

US-1 (SR-15)

Over: LITTLE BOGGY CREEK

5 MI. N. OF CALLAHAN, Nassau, FL

Built 1960 Load: 33.0 t ADT: 15,700

US-1 NB (SR-15)

Over: BRADDOCK CREEK

3 MI. N. OF DUVAL CO., Nassau, FL

Built 1948 Load: 33.5 t ADT: 8,050

SR-A1A / 200 WB

Over: AMELIA RIVER

SR-A1A/200 WB / AMELIA R., Nassau, FL

Built 1978 Load: 34.2 t ADT: 24,500

SR-A1A / 200 EB

Over: AMELIA RIVER

SR-A1A/200 EB / AMELIA R., Nassau, FL

Built 1978 Load: 34.2 t ADT: 24,500

I-95 NB (SR-9)

Over: ST. MARY'S RIVER

I-95 / ST. MARY'S RIVER, Nassau, FL

Built 1971 Load: 34.3 t ADT: 76,531

I-95 (SR-9)

Over: LOFTON CREEK

0.5 MI.S.OF CR-108 OVRPSS, Nassau, FL

Built 1968 Load: 35.4 t ADT: 56,500

US-1 SB (SR-15)

Over: CAR SEAT CREEK

1.9 MI. N. OF SR-200, Nassau, FL

Built 1924 Load: 37.2 t ADT: 7,850

CR 121

Over: DEEP CREEK

3.5 MI NORTH OF CR 119, Nassau, FL

Built 1949 Load: 37.9 t ADT: 3,000

CR 119

Over: BRANDY BRANCH

0.1 MI WEST OF US 301, Nassau, FL

Built 1950 Load: 37.9 t ADT: 1,300

US-1 NB (SR-15)

Over: FUNKS CREEK

2.2 MI. N. OF DUVAL CO., Nassau, FL

Built 1960 Load: 40.2 t ADT: 8,050

CR 115

Over: LITTLE MILLS CREEK

2.3 MI NW OF US 1, Nassau, FL

Built 1938 Load: 40.5 t ADT: 2,500

US-17 (SR-5)

Over: NASSAU CREEK

1.25 MI. N. OF DUVAL CO., Nassau, FL

Built 2001 Load: 40.6 t ADT: 18,000

US-1 SB (SR-15)

Over: ST. MARY'S RIVER

FL. - GA. LINE, Nassau, FL

Built 1957 Load: 40.8 t ADT: 4,941

US-1 NB (SR-15)

Over: ST. MARY'S RIVER

FL. - GA. LINE, Nassau, FL

Built 1957 Load: 40.8 t ADT: 4,941

US-17 (SR-5)

Over: CREWS CREEK

0.65 MI. N. OF DUVAL CO., Nassau, FL

Built 2001 Load: 42.3 t ADT: 18,000

US-1 NB (SR-15)

Over: CAR SEAT CREEK

1.9 MI. N. OF SR-200, Nassau, FL

Built 1960 Load: 42.5 t ADT: 7,850

US-1 SB (SR-15)

Over: FUNKS CREEK

2.2 MI. N. OF DUVAL CO., Nassau, FL

Built 1924 Load: 42.6 t ADT: 8,050

I-95 (SR-9)

Over: CAT CREEK

0.7 MI. S. OF US-17, Nassau, FL

Built 1968 Load: 42.9 t ADT: 56,500

US-17 (SR-5)

Over: LOFTON CREEK

2.9 MI. N. OF SR-A1A, Nassau, FL

Built 2001 Load: 44.0 t ADT: 14,000

CR 108 (River Rd)

Over: BRANCH OF MILL CREEK

2.8 MI EAST OF CR 121, Nassau, FL

Built 1950 Load: 46.5 t ADT: 2,800

US-1 SB (SR-15)

Over: BRANCH OF MILLS CREEK

5.5 MI. N. OF CALLAHAN, Nassau, FL

Built 1997 Load: 47.0 t ADT: 7,850

US-1 SB (SR-15)

Over: LITTLE BOGGY CREEK

1.09 MI. S. OF CR-108, Nassau, FL

Built 1997 Load: 47.0 t ADT: 6,800

CR 108

Over: BRNCH LITTLE ST MARYS RV

4.2 MI EAST OF US 1, Nassau, FL

Built 1950 Load: 49.1 t ADT: 3,400

HILL ROAD

Over: LITTLE MILLS CREEK

0.1 MI N OF ROBERTS RD, Nassau, FL

Built 1931 Load: 52.7 t ADT: 31

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 6, 2026