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:

SH146NB TO SP330WB

Over: SH 146, SP330, DECKER DR

AT JCT SH146 AND SPUR330, Harris, TX

Built 2002 ADT: 42,300

SH 146 SB

Over: SPUR 330

AT INT SH 146 & SPUR 330, Harris, TX

Built 1982 ADT: 10,950

SH 146 NB

Over: SPUR 330

AT INT SH 146 & SPUR 330, Harris, TX

Built 1982 ADT: 43,180

S 330 E TO SH 146B

Over: SH 146 SB FR

AT INT SH 146 & SPUR 330, Harris, TX

Built 2010 ADT: 26,030

SP330E TO SH 146 C

Over: SH 146

AT INT SH 146 & SPUR 330, Harris, TX

Built 2010 ADT: 25,520

SPUR 330 TO SH 146

Over: SPUR 330 EB

AT INT SH 146 & SPUR 330, Harris, TX

Built 2010 ADT: 26,030

SH 146 S TO 330 W

Over: SH 146 SB FR

AT INT OF SH 146 & S 330, Harris, TX

Built 2010 ADT: 7,190

IH 45

Over: ROBERTS & NETTLETON

3.5 MI N OF IH 610, Harris, TX

Built 1948 ADT: 3,000

IH 45

Over: SCOTT ST

3.5 MI N OF IH 610, Harris, TX

Built 1948 ADT: 8,328

IH 45

Over: CULLEN BLVD

1.50 MI SE OF US 59, Harris, TX

Built 1948 ADT: 109,660

IH 45 SBML

Over: SP 5 NB, HB&T RR, ELGIN

1.80 MI SE OF US 59, Harris, TX

Built 1948 ADT: 32,790

IH 45 NB

Over: UP RR & TELLEPSEN RD

0.95 MI NW OF US 90A, Harris, TX

Built 1948 ADT: 850

IH 45 NB

Over: TELEPHONE RD

2.40 MI NW OF IH 610, Harris, TX

Built 1949 ADT: 2,000

IH 45 NB

Over: GRIGGS, BROAD/MYRTLE, RR

0.75 MI SE OF US 90A, Harris, TX

Built 1950 ADT: 1,000

IH 45

Over: WOODRIDGE DRIVE

0.5 MI NW OF IH 610, Harris, TX

Built 1951 ADT: 7,500

IH 45

Over: PARK PLACE & BROADWAY

1 MI S OF IH 610, Harris, TX

Built 1952 ADT: 10,000

SP 5 SB CONN

Over: IH 45, HOV, ST JOSEPH

IH 45/US 59 INTERCHANGE, Harris, TX

Built 1954 ADT: 184,380

W DALLAS ST

Over: IH 45

0.10 MI S OF ALLEN PKWY, Harris, TX

Built 1955 ADT: 215,860

JEFFERSON ST EXIT

Over: CALHOUN ST TO IH 45 NB

0.30 MI S OF ALLEN PKWY, Harris, TX

Built 1955 ADT: 21,580

IH 45 NB

Over: BUFFALO BYU/ALLEN PKWY

0.10 MI N OF DALLAS ST, Harris, TX

Built 1955 ADT: 227,580

IH 45

Over: LITTLE YORK RD

4.75 MI N OF IH 610, Harris, TX

Built 1959 ADT: 26,780

IH 45

Over: PARKER RD

4.00 MI N OF IH 610, Harris, TX

Built 1959 ADT: 19,667

IH 45

Over: TIDWELL RD

2.50 MI N OF IH 610, Harris, TX

Built 1959 ADT: 270,800

IH 45 NB

Over: AIRLINE DR & VICTORIA DR

1.5 MI N OF IH 610, Harris, TX

Built 1960 ADT: 10,000

IH 45 NB

Over: CROSSTIMBERS ST

1.25 MI N OF IH 610, Harris, TX

Built 1960 ADT: 10,000

IH 45 NB

Over: STOKES RD & UPRR

0.50 MI N OF IH 610, Harris, TX

Built 1960 ADT: 500

QUITMAN RD

Over: IH 45 NB

0.20 MI N OF IH 10, Harris, TX

Built 1959 ADT: 106,290

IH 45 NB EXT/HOU

Over: ALLEN PKWY/BUFFALO BYU

0.10 MI N OF DALLAS ST, Harris, TX

Built 1962 ADT: 227,580

IH 45 NB

Over: IH 45 NB HOUSTON EXIT

0.30 MI N OF DALLAS ST, Harris, TX

Built 1962 ADT: 116,060

IH 45 SBFR

Over: W DALLAS ST

0.10 MI S OF ALLEN PKWY, Harris, TX

Built 1962 ADT: 113,790

IH 45 NB ON RP

Over: W DALLAS ST

0.10 MI S OF ALLEN PKWY, Harris, TX

Built 1963 ADT: 113,790

IH 45 SB

Over: WHITE OAK BYU & IH10 WB

@ IH-10 & IH-45, Harris, TX

Built 1961 ADT: 125,804

NORTH ST

Over: IH 45

0.75 MI N OF IH 10, Harris, TX

Built 1961 ADT: 212,590

IH 45 NB

Over: LINK RD

0.50 MI S OF IH 610, Harris, TX

Built 1962 ADT: 2,000

IH 45 NB

Over: CAVALCADE RD

0.60 MI S OF IH 610, Harris, TX

Built 1962 ADT: 10,000

IH 45 NB

Over: W PATTON ST

2.00 MI N OF IH 10, Harris, TX

Built 1962 ADT: 10,000

COTTAGE ST

Over: IH 45

1.25 MI N OF IH 10, Harris, TX

Built 1962 ADT: 212,590

N MAIN ST

Over: IH 45

1.00 MI N OF IH 10, Harris, TX

Built 1962 ADT: 212,590

IH 45 SB ON-RAMP

Over: CROSSTIMBERS RAMP

1.30 MI N OF IH 610, Harris, TX

Built 1967 ADT: 27,620

IH45 SB / NASA1 EB

Over: IH 45

0.4 MI SE OF FM 528, Harris, TX

Built 2009 ADT: 100,000

IH 45 NB

Over: NASA RD 1 (NASA BYPASS)

1.4 MI NW OF FM 518, Harris, TX

Built 2008 ADT: 42,210

IH 45 SB

Over: NASA RD 1 (NASA BYPASS)

1.4 MI NW OF FM 518, Harris, TX

Built 2008 ADT: 42,210

NASA RD 1

Over: KOBAYASHI RD

0.4 MI SE OF FM 528, Harris, TX

Built 2009 ADT: 3,000

NASA1 WB / IH45 NB

Over: IH 45 NBFR

0.4 MI SE OF FM 528, Harris, TX

Built 2009 ADT: 6,700

SP 5 NBFR

Over: IH 45 NBFR

1.70 MI SE OF US 59, Harris, TX

Built 1976 ADT: 4,530

LOMBARDY ST

Over: IH 45 NB FR

1.00 MI NW OF US 90A, Harris, TX

Built 1977 ADT: 4,530

LOMBARDY ST

Over: IH 45 SB FR

1.00 MI NW OF US 90A, Harris, TX

Built 1977 ADT: 2,090

TELLEPSEN ST

Over: IH 45 NB FR

0.85 MI NW OF US 90A, Harris, TX

Built 1977 ADT: 4,530

TELLEPSEN ST

Over: IH 45 SB FR

0.85 MI NW OF US 90A, Harris, TX

Built 1977 ADT: 2,090

GRIGGS RD

Over: IH 45 NBFR

0.75 MI SE OF US 90A, Harris, TX

Built 1977 ADT: 19,380

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.