Collin County, TX

1,127 public highway bridges

Collin County Bridge Snapshot

Collin County, Texas contains 1,127 public highway bridges in the FHWA National Bridge Inventory. Roughly 53.6% are rated “Good,” 28.5% “Fair,” 0.1% “Poor,” and 0.1% 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 TX 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.

1,127

Total Bridges

53.6%

Good

0.1%

Poor

0.1%

Structurally Deficient

Condition Distribution

Good

53.6% (604)

Fair

28.5% (321)

Poor

0.1% (1)

SD

0.1% (1)

All Bridges (1,127)

Sort:

SH 121 SB CONN

Over: US 75

5.6 MI S OF FM 455, Collin, TX

Built 2015 ADT: 91,112

FM 455

Over: FM 455

5.6 MI N OF SH 121, Collin, TX

Built 2019 ADT: 78,811

W FOSTER CROSSING

Over: US 75

3.8 MI N OF SH 121, Collin, TX

Built 2019 ADT: 78,811

THROCKMORTON ROAD

Over: US 75

3.1 MI N OF SH 121, Collin, TX

Built 2019 ADT: 78,811

ROSAMOND PKWY

Over: US 75

4.16 MI S OF FM 121, Collin, TX

Built 2019 ADT: 42,865

US 380

Over: SH 78

AT INT US 380 & SH 78, Collin, TX

Built 2011 ADT: 5,347

MAIN ST

Over: US 380

2.5 MI S OF UNIV DR, Collin, TX

Built 2013 ADT: 9,999

SH 289

Over: US 380

AT US 380 & SH 289, Collin, TX

Built 2012 ADT: 33,522

US 380

Over: SH 289 W FR

US 380 AT SH 289, Collin, TX

Built 2019 ADT: 499

US 380

Over: Dallas N Tollway W FR

US 380 AT DNT, Collin, TX

Built 2019 ADT: 25,600

SH 78

Over: CR 545

6.70 MI S OF US 380, Collin, TX

Built 1972 ADT: 175

SH 78

Over: Moore Ln

1.25 MI NE OF SH 205, Collin, TX

Built 2014 ADT: 230

SH 121 NB

Over: DNT NB FR

DNT/SH 121 INTERCHANGE, Collin, TX

SH 121 SB

Over: DNT NB FR

DNT/SH 121 INTERCHANGE, Collin, TX

SH 121 SB

Over: CUSTER RD (FM 2478)

5.5 MI W OF US 75, Collin, TX

Built 2005 ADT: 27,884

SH 121 NB

Over: CUSTER RD (FM 2478)

5.5 MI W OF US 75, Collin, TX

Built 2005 ADT: 27,884

SRT SBML

Over: PARKWOOD BOULEVARD

0.5 MI NE OF DNT, Collin, TX

Built 2008 ADT: 20,518

SRT NBML

Over: PARKWOOD BOULEVARD

0.5 MI NE OF DNT, Collin, TX

Built 2008 ADT: 20,518

SH 121 NB RAMP A

Over: SH 121 EB ON RAMP B

0.53 MI NE OF DNT, Collin, TX

Built 2009 ADT: 1,000

SRT SBML

Over: SH 289 SB

AT SH 289 (PRESTON) INT, Collin, TX

SRT NB ML

Over: SH 121 SB

AT SH 289 (PRESTON) INT, Collin, TX

SH 289

Over: SH 121 NBFR

AT INT SH 121 & SH 289, Collin, TX

SRT SB

Over: LEGACY DRIVE

1.0 MI SW OF DNT, Collin, TX

Built 2010 ADT: 26,732

SRT NB

Over: LEGACY DRIVE

1.0 MI SW OF DNT, Collin, TX

Built 2010 ADT: 26,732

OHIO DRIVE

Over: OHIO DRIVE

0.5 MI NE OF SH 289, Collin, TX

Built 2008 ADT: 110,632

SRT NB

Over: SRT NB

1.1 MI NE OF SH 289, Collin, TX

Built 2009 ADT: 10,000

SRT SB

Over: SRT SB

1.1 MI NE OF SH 289, Collin, TX

Built 2009 ADT: 10,000

SRT NB

Over: COIT ROAD

2.2 MI SW OF FM 2478, Collin, TX

Built 2009 ADT: 8,000

SRT SB

Over: COIT ROAD

2.2 MI SW OF FM 2478, Collin, TX

Built 2009 ADT: 8,000

SRT SB

Over: SRT SB

1.1 MI SW OF FM 2478, Collin, TX

Built 2009 ADT: 7,000

SRT NB

Over: SRT NB

1.1 MI SW OF FM 2478, Collin, TX

Built 2009 ADT: 7,000

SH 121 NB

Over: ALMA DRIVE

1.6 MI NE OF FM 2478, Collin, TX

Built 2009 ADT: 14,293

SH 121 SB

Over: ALMA DRIVE

1.6 MI NE OF FM 2478, Collin, TX

Built 2009 ADT: 14,293

SRT NB

Over: LAKE FOREST DRIVE

3.4 MI NE OF FM 2478, Collin, TX

Built 2009 ADT: 45,157

SRT NB

Over: ROWLETT CK & EXCHGE PKWY

4.5 MI W OF US 75, Collin, TX

Built 2009 ADT: 20,560

SRT SB

Over: LAKE FOREST DRIVE

3.4 MI NE OF FM 2478, Collin, TX

Built 2009 ADT: 45,157

SRT SB

Over: ROWLETT CK & EXCHGE PKWY

4.6 MI W OF US 75, Collin, TX

Built 2009 ADT: 20,560

SRT SB

Over: STACY ROAD

2.6 MI NE OF FM 2478, Collin, TX

Built 2009 ADT: 24,304

SRT NB

Over: STACY ROAD

2.6 MI NE OF FM 2478, Collin, TX

Built 2009 ADT: 24,304

SH121 to US75 CONN

Over: SH 121 SBFR

AT INT US 75 & SH 121, Collin, TX

SW CONNECTOR

Over: US 75 SBFR

AT INT US 75 & SH 121, Collin, TX

SH 121 NB / SS 399

Over: MEDICAL CENTER DRIVE

0.6 MILE EAST OF US 75, Collin, TX

Built 2011 ADT: 5,907

SH 121 SB / SS 399

Over: MEDICAL CENTER DRIVE

0.6 MI EAST OF US 75, Collin, TX

Built 2011 ADT: 19,785

SRT NB

Over: HARDIN BLVD

1.1 MI WEST OF US 75, Collin, TX

Built 2011 ADT: 18,889

SRT SB

Over: HARDIN BLVD

1.1 MILE WEST OF US 75, Collin, TX

Built 2011 ADT: 18,889

SRT NB OFF-RP

Over: SH 121 NB ENT RAMP

0.9 MI W OF US 75, Collin, TX

Built 2011 ADT: 1,500

SRT SB ON-RP

Over: SH 121 SB ML EXIT RAMP

0.9 MI WEST OF US 75, Collin, TX

Built 2011 ADT: 1,000

E-N DIRECT CONN

Over: US 75 SB

AT INT US 75 & SH 121, Collin, TX

SH 121 NB FR

Over: US 75

SH 121 & US 75, Collin, TX

Built 2011 ADT: 121,625

SH 121 SB FR

Over: US 75

AT INT US 75 & SH 121, Collin, TX

Built 2011 ADT: 121,625

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