County profile · official public datasets

Montgomery County, TX

710 public highway bridges tracked in the FHWA National Bridge Inventory: 69.2% rated Good, 30.1% Fair, 0.7% Poor.

710
Public bridges: 69.2%
Good condition: 0.7%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Montgomery County pairs a better-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

Top 46%
lowest Poor share in state: 0.7%
Poor-condition share: 710
public highway bridges: 1998
avg year built

Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.

Montgomery County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Montgomery County ranks #114 of 247 Texas counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0.7%). Montgomery County, Texas contains 710 public highway bridges. Roughly 69.2% are rated “Good,” 30.1% “Fair,” and 0.7% “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.

Total bridges

710

Public highway bridges in Montgomery County

Good condition

69.2%

491 of 710 rated 7-9

Fair condition

30.1%

214 of 710 rated 5-6

Poor condition

0.7%

5 of 710 rated 4 or below

In-state Poor-share rank

#114 of 247

Among Texas counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 710 NBI-tracked bridges by lowest applicable component rating.

Good

69.2% (491)

Fair

30.1% (214)

Poor

0.7% (5)

Montgomery County's Poor-condition bridges carry 910 vehicle crossings a day

That is 0% of the county's reported daily bridge traffic on 0.7% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 182 crossings a day against 14,619 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.

Computed over the 710 of 710 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

12.1% of Montgomery County's bridges have passed the 50-year mark

86 of the 710 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 69.2% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.

Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.

One structure carries 44% of the county's Poor-condition bridge traffic

EDGEWATER DR over WINDCREST LAKE, built 2000, carries 400 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 5-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 910 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

8
1930s

7
1940s

16
1950s

10
1960s

17
1970s

50
1980s

87
1990s

114
2000s

146
2010s

143
2020s

112

What this shows Construction peaked in the 2000s, when 146 of the county's bridges still in the inventory were built, which is 20.6% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year is 1998, 18 years newer than the Texas average of 1980.

How Montgomery County compares with Texas's closest counties by inventory size

The 5 Texas counties nearest Montgomery County in number of bridges, with their condition splits. Its 0.7% Poor share is the 2nd-lowest of these 6. Its average build year of 1998 against a peer-group mean of 1987 is 11 years newer.

Showing the 5 closest of 246 Texas counties eligible for comparison.

Bridge inventory size and condition shares for Montgomery County and the 5 Texas counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Fort Bend County	795	72.8%	24.7%	2.5%	1998
El Paso County	783	54.4%	44.8%	0.8%	1986
McLennan County	714	51.8%	46.2%	2%	1980
Montgomery County (this page)	710	69.2%	30.1%	0.7%	1998
Ellis County	691	53.3%	45.2%	1.6%	1987
Bell County	660	54.7%	45%	0.3%	1984

Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Montgomery County's. Source: FHWA National Bridge Inventory, 2024 release.

Nationwide counties with similar inventory size or average build year

Two NBI-derived peer sets for Montgomery County, both outside Texas so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside TX (710 bridges here).

Madison County, AL · 710 bridges
Pinal County, AZ · 716 bridges
Pulaski County, AR · 721 bridges
Douglas County, OR · 699 bridges

Similar average build year

Nearest mean year-built outside TX (1998 here).

Orange County, FL · avg 1998 · 885 bridges
Pipestone County, MN · avg 1998 · 185 bridges
Hyde County, NC · avg 1998 · 75 bridges
Hertford County, NC · avg 1998 · 58 bridges

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 710 Good 491 Fair 214 Poor 5

All bridges (710)

Sort:

Montgomery County Bridge Snapshot

Condition distribution

Montgomery County's Poor-condition bridges carry 910 vehicle crossings a day

12.1% of Montgomery County's bridges have passed the 50-year mark

One structure carries 44% of the county's Poor-condition bridge traffic

How Montgomery County compares with Texas's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

All bridges (710)

SORTERS RD

SPRING TRAIL BEND

W WELSFORD DR

WHISPERING MPLE WY

WOODSONS RESERVE P

YAUPON SHORE DR

FS RD 209

DACUS JOHNSON RD

JACKSON RD

HONEA EGYPT RD

HONEA EGYPT RD

W BRANCH CROSSING

WOODLANDS PKWY

GROGANS MILL RD

SIX PINES DR

CRIPPLE CREEK DR

DECKER P ROSEHILL

NICHOLS SAWMILL RD

NICHOLS SAWMILL RD

ALBERT MOOREHEAD

RAYFORD DR

BASSWOOD DR

ROGERS RD

ROSE RD

LEXINGTON BLVD

KOALSTAD RD

FOSTORIA RD

DUKE RD

RESEARCH FOREST DR

BRANCH CROSSING

Bronze Trace Dr

SB BIRNHAM WOODS

BIRNHAM WOODS DR

WOODRIDGE PKWY

KINGWOOD PLACE DR

KINGWOOD PLACE DR

CRIGHTON ROAD

DALLAS ST

DALLAS ST SB

DEISON PRK BLVD EB

DEISON PRK BLVD WB

GREENWAY DR

MEMORIAL DR

NICHOLS SAWMILL RD

TEXACO ROAD

FM 1484

FM 1484

GROGANS MILL RD NB

GROGANS MILL RD SB

IH 45 NB

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