Harris County, TX

4,030 public highway bridges

Harris County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Harris County, Texas contains 4,030 public highway bridges. Roughly 31.2% are rated “Good,” 31.4% “Fair,” and 0.4% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

4,030

Total Bridges

31.2%

Good

31.4%

Fair

0.4%

Poor Condition

Condition Distribution

Good

31.2% (1,259)

Fair

31.4% (1,266)

Poor

0.4% (18)

All Bridges (4,030)

Sort:

IH 610W

Over: WESTHEIMER RD

0.84 MI N OF US 59, Harris, TX

Built 2006 ADT: 35,000

IH 610W

Over: SAN FELIPE ST

1.28 MI N OF US 59, Harris, TX

Built 2006 ADT: 35,000

IH 610 SB OFF RAMP

Over: IH 610 SBFR & W ALABAMA

0.65 MI N OF US 59, Harris, TX

Built 2004 ADT: 25,490

IH 610 SB OFF-RAMP

Over: IH 610 SB ON-RAMP

1.00 MI N OF US 59, Harris, TX

Built 2004 ADT: 26,000

IH 610W NB ON-RAMP

Over: IH 610W NB OFF-RAMP

1.07 MI N OF US 59, Harris, TX

Built 2006 ADT: 35,000

IH 610 NB TO IH 10

Over: MEMORIAL DR

0.5 MI S OF IH 10, Harris, TX

Built 2006 ADT: 38,099

IH10 WB - IH610 NB

Over: IH10 WB EX & OLD KATY EB

0.25 MI N OF IH 610, Harris, TX

Built 2006 ADT: 36,201

IH 610

Over: POST OAK BLVD

1.8 MI S OF IH 10, Harris, TX

Built 2006 ADT: 18,500

IH 610

Over: WOODWAY DR

1.0 MI S OF IH 10, Harris, TX

Built 2006 ADT: 41,138

WOODWAY EXIT RAMP

Over: MEMORIAL DR

0.5 MI S OF IH 10, Harris, TX

Built 2006 ADT: 5,000

IH 610 NB ON RAMP

Over: MEMORIAL DR

0.5 MI S OF IH 10, Harris, TX

Built 2006 ADT: 38,099

IH 610 ML

Over: MEMORIAL DR

0.5 MI S OF IH 10, Harris, TX

Built 2006 ADT: 38,099

IH 610 NB ENT RAMP

Over: CONN D & I

0.5 MI S OF IH10, Harris, TX

Built 2006 ADT: 55,099

IH 610 NB

Over: IH 10 & OLD KATY RD

0.00 MI N OF IH 10, Harris, TX

Built 2005 ADT: 309,900

IH 610 SB

Over: IH 10 & OLD KATY RD

0.00 MI N OF IH 10, Harris, TX

Built 2005 ADT: 309,900

IH 610 SB TO IH 10

Over: OLD KATY ROAD

IH610/IH10 INTERCHANGE, Harris, TX

Built 2006 ADT: 10,000

IH69 NB / IH610 SB

Over: IH610 DC-F

IH610 / IH69 INTERCHANGE, Harris, TX

Built 2020 ADT: 10,649

IH610 Bus Lane

Over: IH 610 Bus Lane

0.02 Mi N of Westpark Dr, Harris, TX

Built 2020 ADT: 40,909

IH610 SB / IH69 NB

Over: IH610 DC-A

IH610 / IH69 INTERCHANGE, Harris, TX

Built 2020 ADT: 148,671

IH 610 Bus Lane

Over: IH610 SBML, SBFR, Etc.

0.01 MI North of Post Oak, Harris, TX

Built 2021 ADT: 110,512

SH 134 INDEPENDNCE

Over: SH 225 ML & WBFR

3.7 MI E OF BW 8, Harris, TX

Built 1990 ADT: 80,040

SH 146

Over: SH 146 BUS

2.70 MI E OF SPUR 330, Harris, TX

Built 1988 ADT: 32,680

SH 146 NB

Over: UP RR & PORT ROAD

2.80 MI N OF NASA RD 1, Harris, TX

Built 1969 ADT: 5,530

SH 146

Over: CLEAR CRK & SHIPYARD DR

0.80 MI N OF FM 518, Harris, TX

Built 1986 ADT: 2,000

SH 146

Over: FAIRMONT PARKWAY

2.50 MI S OF SH 225, Harris, TX

Built 1987 ADT: 37,360

SH 146 SB

Over: UP RR & PORT ROAD

2.80 MI N OF NASA RD 1, Harris, TX

Built 1969 ADT: 5,530

SH 146 NB

Over: SPENCER HWY

1.60 MI S OF SH 225, Harris, TX

Built 2000 ADT: 9,000

SH 146 SB

Over: SPENCER HWY

1.60 MI S OF SH 225, Harris, TX

Built 2001 ADT: 9,000

SH 146

Over: CHOATE RD & SHOREACRES B

2.27 MI S OF FAIRMONT PKW, Harris, TX

Built 2012 ADT: 15,000

SH 146

Over: RED BLUFF RD

1.77 MI N OF NASA RD 1, Harris, TX

Built 2012 ADT: 29,170

SH 146

Over: WHARTON WEEMS (SP 498)

1.05 MI S OF FAIRMONT PKW, Harris, TX

Built 2012 ADT: 2,600

SH 146 SB CONN

Over: PORT RD & SH 146

3.0 MI N OF NASA RD 1, Harris, TX

Built 2012 ADT: 29,790

SH146 NB CONNECTOR

Over: UP RAILROAD, FRTG RDS

5.8 MI S OF SH 225, Harris, TX

Built 2016 ADT: 40,000

SH 146 SB

Over: HOUSTON SHIP CHANNEL

0.6 MI N OF SH 225, Harris, TX

SH 146 SB

Over: BARBOURS CUT BLVD

1.4 MI N OF FAIRMONT PKWY, Harris, TX

Built 1996 ADT: 3,000

SH 146 NB

Over: BARBOURS CUT BLVD

1.4 MI N OF FAIRMONT PKWY, Harris, TX

Built 1996 ADT: 3,000

SH146SB TOSH 225WB

Over: STRANG ROAD

SH146/SH225 INTERCHANGE, Harris, TX

Built 1998 ADT: 3,000

SH146NB to SH225WB

Over: SH 146/225EBto146NB/UPRR

SH 146/SH 225 INTERCHANGE, Harris, TX

Built 2000 ADT: 50,000

SH 146 SB ML

Over: HCFCD DRAIN & UP RR

SH146/SH225 INTERCHANGE, Harris, TX

Built 1998 ADT: 22,190

SH 146 NB ML

Over: HCFCD DRAIN & UP RR

SH 146/SH 225 INTERCHANGE, Harris, TX

Built 2000 ADT: 22,190

SH 225 EB/SH 146SB

Over: SH 225 EB FR & STRANG RD

SH146/SH225 INTERCHANGE, Harris, TX

Built 1998 ADT: 1,210

SH 146 NB

Over: WEST MAIN STREET

0.85 MI NE OF SH 146 BUS, Harris, TX

Built 1971 ADT: 3,000

SH 146 NB

Over: UPRR;MARKET & LEFEVRE ST

1.4 MI N OF BU 146, Harris, TX

Built 1971 ADT: 3,000

SH 146 SB

Over: WEST MAIN STREET

0.85 MI NE OF SH 146 BUS, Harris, TX

Built 1971 ADT: 3,000

SH 146 SB

Over: UPRR;MARKET & LEFEVRE ST

1.4 MI N OF BU 146, Harris, TX

Built 1971 ADT: 3,000

SH 146

Over: MISSOURI ST

0.30 MI NE OF SH 146 BUS, Harris, TX

Built 1996 ADT: 4,640

SH 146

Over: W TEXAS AVE

0.50 MI SW OF SPUR 330, Harris, TX

Built 1996 ADT: 3,000

SH99 SB / SH146 SB

Over: SH 146 ML

AT BU 146 & SH 146 INTER., Harris, TX

Built 1996 ADT: 46,390

SH 146

Over: GOOSE CREEK & GARTH RD

0.40 MI E OF SPUR 330, Harris, TX

Built 1996 ADT: 5,000

SH 146

Over: NORTH MAIN ST

1.45 MI E OF SPUR 330, Harris, TX

Built 1996 ADT: 5,000

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

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Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.