Harris County, TX

4,030 public highway bridges

Harris County Bridge Snapshot

Harris County, Texas contains 4,030 public highway bridges in the FHWA National Bridge Inventory. Roughly 31.2% are rated “Good,” 31.4% “Fair,” 0.4% “Poor,” and 0.4% 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.

4,030

Total Bridges

31.2%

Good

0.4%

Poor

0.4%

Structurally Deficient

Condition Distribution

Good

31.2% (1,259)

Fair

31.4% (1,266)

Poor

0.4% (18)

SD

0.4% (18)

All Bridges (4,030)

Sort:

GRIGGS RD

Over: IH 45 SBFR

0.75 MI SE OF US 90A, Harris, TX

Built 1977 ADT: 24,420

IH 45 NB/IH 10 EB

Over: IH 10 EXIT AND ENT RAMPS

@ IH 10 & IH 45, Harris, TX

Built 1966 ADT: 116,060

IH 45 SBFR

Over: SP 5 & UP RR

1.80 MI SE OF US 59, Harris, TX

Built 1976 ADT: 32,790

IH45 SB MCKINEY EX

Over: BUFFALO BYU/IH 45 NB

0.10 MI W OF ALLEN PKWY, Harris, TX

Built 1962 ADT: 232,130

IH 45 SB COLL

Over: BUFFALO BYU,MISC STREETS

0.10 MI N OF DALLAS ST, Harris, TX

Built 1962 ADT: 227,580

IH 45 SB-ALLEN EX

Over: BUFFALO BAYOU/SABINE CON

0.10 MI N OF ALLEN PKWY, Harris, TX

Built 1962 ADT: 10,000

IH 45 NB COLL

Over: BUFFALO BYU,ALLEN PKWY

0.10 MI N OF DALLAS ST, Harris, TX

Built 1962 ADT: 227,580

IH 45 NB WALKR ENT

Over: BUFFALO BYU

0.10 MI N OF ALLEN PKWY, Harris, TX

Built 1962 ADT: 5,000

IH 45 NB PIERCE EL

Over: US 59 & MISC ST

SW OF DOWNTOWN HOUSTON, Harris, TX

Built 1967 ADT: 223,720

IH 45 NB EXIT

Over: ALLEN PARKWAY

0.20 MI N OF DALLAS ST, Harris, TX

Built 1955 ADT: 227,580

IH 45 SB/IH 610 EB

Over: IH 610 WB FR & HOV

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1951 ADT: 14,090

IH 45 NB

Over: IH 610 WB FR

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1952 ADT: 3,020

IH 45 NB

Over: CONN IH45 SB TO IH610 EB

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1952 ADT: 23,554

IH 45

Over: US 90A (S WAYSIDE DR)

2.00 MI NW OF IH 610, Harris, TX

Built 1949 ADT: 10,390

IH 45 SB/ US 59 NB

Over: US 59 SB & MISC ST

IH 45/US 59 INTERCHANGE, Harris, TX

Built 1972 ADT: 205,000

IH 45 SB PIERCE EL

Over: US 59 & MISC ST

SW OF DOWNTOWN HOUSTON, Harris, TX

Built 1967 ADT: 223,720

IH 45 SB/US 59 SB

Over: US 59 SB & MISC ST

IH 45/US 59 INTERCHANGE, Harris, TX

Built 1974 ADT: 150,770

IH 45 NB OFF RAMP

Over: IH 45 NB ON RAMP

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1981 ADT: 14,090

IH 610 WB/IH 45 SB

Over: IH 610 & IH 45 NB

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1981 ADT: 120,870

IH 45 NB/IH 610 EB

Over: EXIT TO BROADWAY BLVD

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1981 ADT: 25,610

IH 45 SB OFF RAMP

Over: IH 45 SB ON RAMP

1.0 MI SE OF US 90A, Harris, TX

Built 1983 ADT: 18,610

IH 45 SB FR CONN

Over: ELGIN ST

IH 45 @ ELGIN ST., Harris, TX

Built 1960 ADT: 109,660

IH 45 SB

Over: SH 35 NB & HOV ACCESS RD

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1977 ADT: 8,150

IH 45 SB

Over: IH 610 WB FR & HOV ACCES

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1977 ADT: 3,020

IH 45 SB

Over: CONN IH45 SB TO IH610 EB

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1977 ADT: 25,610

IH 610 EB/IH 45 SB

Over: IH 45 SB FR & OFF RAMP

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1977 ADT: 25,610

IH 45 NB/IH 610 WB

Over: IH45SB HOV & SBtoEB CONN

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1973 ADT: 256,100

IH 610 EB OFF RAMP

Over: IH 45/IH 610 CONNS

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1977 ADT: 25,610

IH 45 NB CONN D

Over: SP 5 NB CONN, RR, ELGIN

1.80 MI SE OF US 59, Harris, TX

Built 1985 ADT: 39,000

IH 45 HOV

Over: IH 45 NBML

2.00 MI SE OF US 59, Harris, TX

Built 1985 ADT: 92,190

SP 5 NB EXIT

Over: IH 45 NBFR & SCOTT ST

1.10 MI S OF US 59, Harris, TX

Built 1985 ADT: 4,530

IH 45 HOV

Over: SH 35 NB & HOV ACCESS RD

IH 45 @ SH 35 (INTERCHG), Harris, TX

Built 1985 ADT: 8,150

IH 45 HOV

Over: IH 610 WB FR

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1985 ADT: 14,090

IH 45 HOV

Over: CONN IH45 SB TO IH610 EB

IH 610 @ IH 45 (INTERCHG), Harris, TX

Built 1987 ADT: 11,206

IH 45 NBML

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

1.80 MI SE OF US 59, Harris, TX

Built 1948 ADT: 36,000

IH 45 HOV RP

Over: IH 45 NBFR

2.00 MI SE OF US 59, Harris, TX

Built 1992 ADT: 22,370

IH 45 HOV

Over: IH 45 NB

IH 45/US 59 INTERCHANGE, Harris, TX

Built 1988 ADT: 92,190

SP 5 SB ON-RP

Over: IH 45 SBFR

1.10 MI S OF US 59, Harris, TX

Built 1988 ADT: 2,090

IH 45 SB CONN C

Over: SP 5, CULLEN, HB&T RR

1.50 MI SE OF US 59, Harris, TX

Built 1988 ADT: 39,000

FUQUA ST WB

Over: IH 45

1.60 MI NW OF FM 2553, Harris, TX

Built 1989 ADT: 158,410

FM 2553/SCARSDALE

Over: IH 45

1.20 MI NW OF FM 1959, Harris, TX

Built 1989 ADT: 176,670

IH 45 SB

Over: BELLFORT AVE/HOWARD DR

2.0 MI SE OF IH 610, Harris, TX

Built 1992 ADT: 16,630

IH 45 NB & HOV

Over: BELLFORT AVE/HOWARD DR

2.0 MI SE OF IH 610, Harris, TX

Built 1992 ADT: 16,630

IH 45 SB

Over: SH 3 (MONROE RD)

2.6 MI SE OF IH 610, Harris, TX

Built 1991 ADT: 18,900

IH 45 NB & HOV

Over: SH 3 (MONROE RD)

2.6 MI SE OF IH 610, Harris, TX

Built 1991 ADT: 18,900

IH 45 HOV CONN H

Over: WHITE OAK BYU / IH10 WB

@ IH 10 & IH 45, Harris, TX

Built 1990 ADT: 233,660

IH 45 HOV

Over: LOUISIANA ST ENT RAMP G

0.10 MI E OF IH 45, Harris, TX

Built 1990 ADT: 109,660

IH 45 SBML & HOV

Over: SPUR 261

1.6 MI S OF SH 249, Harris, TX

Built 1990 ADT: 31,150

IH 45 HOV

Over: IH 45 ML

0.5 MI SE OF SH 3/MONROE, Harris, TX

Built 1996 ADT: 112,060

IH 45 HOV RAMP

Over: IH 45 NB FR & EASTHAVEN

0.5 MI SE OF SH 3/MONROE, Harris, TX

Built 1996 ADT: 11,206

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

Related

Browse all → | Rankings →

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