Hillsborough County, FL

840 public highway bridges

Hillsborough County Bridge Snapshot

Hillsborough County, Florida contains 840 public highway bridges in the FHWA National Bridge Inventory. Roughly 33.8% are rated “Good,” 21% “Fair,” 0.2% “Poor,” and 0.2% 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.

840

Total Bridges

33.8%

Good

0.2%

Poor

0.2%

Structurally Deficient

Condition Distribution

Good

33.8% (284)

Fair

21% (176)

Poor

0.2% (2)

SD

0.2% (2)

All Bridges (840)

Sort:

XTOWN (SR-618) WB

Over: RAMP E AND CSX RAILROAD

0.50 MI EAST OF 22ND ST, Hillsborough, FL

Built 2013 ADT: 1

NB 22 ST to EB I-4

Over: CSX RR, SR-618 & SR-60

0.4MI E OF 22ND ST(US41B), Hillsborough, FL

Built 2013 ADT: 7,300

I-4 WB to SR618 WB

Over: CSX RR & SR-60

0.1MI S OF GANTRY STRUCTU, Hillsborough, FL

Built 2013 ADT: 22,500

SR618 EB to I-4 EB

Over: CSX RR, SR-618 & SR-60

0.4MI E OF 22ND ST (US41B, Hillsborough, FL

Built 2013 ADT: 7,300

RAMP K

Over: CSX RR & SR-60

0.1MI S OF GANTRY STRUCTU, Hillsborough, FL

Built 2013 ADT: 22,500

SR618 EB to I-4 WB

Over: CSX RR, SR-618 & SR-60

0.5MI E OF 22ND ST, Hillsborough, FL

Built 2013 ADT: 5,000

SR618 WB to I-4 WB

Over: CSX RR, SR 60, & 34TH ST

SR-618 WB OFF-RAMP, Hillsborough, FL

Built 2013 ADT: 22,500

I-4 EB (SR-400)

Over: 4TH STREET & CSX RR

60 FT N/O GANTRY STRUCTUR, Hillsborough, FL

Built 2013 ADT: 3,400

VIADUCT RAMP E

Over: 7TH AVENUE (CR-574)

0.3 MI S OF I-4 WB, Hillsborough, FL

Built 2013 ADT: 3,700

RAMPS F&D TRANSITI

Over: 4TH AVENUE

0.3 MI N OF SR-618, Hillsborough, FL

Built 2013 ADT: 2,050

I-4 (SR-400) EB

Over: 7TH AVE.

0.1 MI S OF I-4, Hillsborough, FL

Built 2013 ADT: 3,900

RMP D & VIADUCT CD

Over: CSX RR, 7TH AVE & RAMP F

0.5MI N OF SR-618, Hillsborough, FL

Built 2013 ADT: 7,400

Ramp F

Over: CSX RR, 7TH AVE.

0.1 MI S OF I-4, Hillsborough, FL

Built 2013 ADT: 3,900

RAMP B

Over: RAMP E & I-4 EB

0.4 MI E OF 22ND STREET, Hillsborough, FL

Built 2013 ADT: 9,250

I-4 EB RAMP B

Over: 26TH STREET

1.2 MI E/O I-275, Hillsborough, FL

Built 2012 ADT: 625

I-4 On Ramp

Over: I-4 (SR-400) EB

0.9 MI NORTH OF SR-618, Hillsborough, FL

Built 2013 ADT: 172,200

RAMP C TO I-4 WB

Over: 26TH STREET

0.25 MI E OF 22ND ST, Hillsborough, FL

Built 2013 ADT: 2,000

SR618A SELMON EXPY

Over: 12TH ST TO 26TH ST

1.7MI W OF 50TH ST (US41), Hillsborough, FL

Built 2006 ADT: 9,500

SR618 SELMON EB

Over: 34TH ST & CREEK

1.3MI WEST OF US-41, Hillsborough, FL

Built 2005 ADT: 3,400

SR618A SELMON EXPY

Over: 34TH STREET

1.3MI WEST OF US-41, Hillsborough, FL

Built 2006 ADT: 3,400

SR618 SELMON EB

Over: MCKAY BAY GREENWAY

0.8MI WEST OF US-41, Hillsborough, FL

Built 2005 ADT: 650

SR618A SELMON EXPY

Over: 39TH ST TO 78TH ST

4.7 MI W OF US-301, Hillsborough, FL

Built 2006 ADT: 38,250

SR618 SELMON WB

Over: PALM RIVER ROAD

1.0MI W OF US-301, Hillsborough, FL

Built 2004 ADT: 6,600

SR618 SELMON EB

Over: US-301 (SR-43)

1.1 MI WEST OF I-75, Hillsborough, FL

Built 2005 ADT: 42,500

SR618A SELMON EXPY

Over: I-75 (SR-93A)

1.2MI E OF US-301, Hillsborough, FL

Built 2004 ADT: 1,000

I-275 SB RAMP P

Over: I-275 SB RAMP N

0.5 MILE EAST OF SR-587, Hillsborough, FL

Built 2013 ADT: 15,500

I-275 SB (SR-93)

Over: LOIS AVENUE

0.6MI WEST OF US92, Hillsborough, FL

Built 2014 ADT: 10,700

I-275 NB

Over: LOIS AVENUE

0.4 MI W OF SR-580, Hillsborough, FL

Built 2014 ADT: 10,900

RAMP R/DALE MABRY

Over: RAMP LOIS AVE TO I-275NB

0.1 MI E/O LOIS AVE, Hillsborough, FL

Built 2014 ADT: 11,500

I-275 SB (SR 93)

Over: CYPRESS STREET

0.2 MI WEST OF US 92, Hillsborough, FL

Built 2014 ADT: 15,600

I-275 NB

Over: CYPRESS STREET

0.3 MI W/O DALE MABRY HWY, Hillsborough, FL

Built 2015 ADT: 15,600

RAMP R (LOIS AVE)

Over: CYPRESS ST

0.25 MI N/O LOIS AVE, Hillsborough, FL

Built 2014 ADT: 15,600

I-275NB RP toUS-92

Over: CYPRESS ST.

0.3 MI S/O SR-580, Hillsborough, FL

Built 2014 ADT: 15,600

I-275SB/CYPRS RMP

Over: RAMP U

0.1MI W/O DALE MABRY HWY, Hillsborough, FL

Built 2013 ADT: 15,000

I-275 (SR-93) SB

Over: US-92 (DALE MABRY HWY)

1.3 MI W/O N ARMENIA AVE, Hillsborough, FL

Built 2014 ADT: 57,000

I-275 NB

Over: US-92 (DALE MABRY HWY)

0.5MI EAST OF LOIS AVE, Hillsborough, FL

Built 2016 ADT: 57,000

I-275 (SR-93) SB

Over: HIMES AVENUE

0.2MI E OF DALE MABRY HWY, Hillsborough, FL

Built 2014 ADT: 2,700

I-275 (SR-93) NB

Over: HIMES AVENUE

0.2MI E OF DALE MABRY HWY, Hillsborough, FL

Built 2013 ADT: 2,700

ASHLEY RMP TO I275

Over: SCOTT STREET

1000FT E OF HILLSB RIVER, Hillsborough, FL

Built 2005 ADT: 5,800

I-275 SB (SR-93)

Over: BUSINESS US-41(SR-685)

0.2 MI E OF HILLS RIVER, Hillsborough, FL

Built 1964 ADT: 6,900

I-275 NB to SR-56

Over: I-75

2 MILES SOUTH OF SR-54, Hillsborough, FL

Built 2010 ADT: 88,000

SR618 SELMON EB

Over: 26TH STREET

1.0MI E OF CHANNELSIDE DR, Hillsborough, FL

Built 2013 ADT: 1,500

SR618 SELMON WB

Over: 26TH STREET

1.0MI E OF CHANNELSIDE DR, Hillsborough, FL

Built 2012 ADT: 1,500

SR-618 WB

Over: MCKAY BAY GREENWAY

0.8 MI W/O US-41, Hillsborough, FL

Built 2012 ADT: 1

I-75 SB (SR 93)

Over: BRUCE B. DOWNS BL(CR581)

2.7MI NOF HILLSBORO RIVER, Hillsborough, FL

Built 2012 ADT: 58,000

I-75 NB

Over: BRUCE B. DOWNS BL(CR581)

2.7MI NOF HILLSBOROUGH RI, Hillsborough, FL

Built 2013 ADT: 58,000

I-75 SB TO SR-60

Over: WOODBERRY ROAD

0.9MI N OF SR-60, Hillsborough, FL

Built 2014 ADT: 10,000

I-75 RAMP D (NB)

Over: WOODBERRY RD

0.7 MI NORTH OF SR-60, Hillsborough, FL

Built 2020 ADT: 10,500

I-4 WB to I-75 NB

Over: Sligh Ave

I-4 & I-75 Interchange, Hillsborough, FL

Built 2017 ADT: 8,000

I-4 EB TO I-75 NB

Over: I-75 NB To I-4WB

0.1 MI N/O I-4, Hillsborough, FL

Built 2017 ADT: 17,500

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 6, 2026