County profile · official public datasets

Bexar County, TX

2,342 public highway bridges tracked in the FHWA National Bridge Inventory: 55% rated Good, 44.7% Fair, 0.3% Poor.

2,342
Public bridges: 55%
Good condition: 0.3%
Poor condition

The verdict

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

Bexar County posts a better-than-median Poor-condition share among rated counties in the state across large county bridge inventory.

Top 37%
lowest Poor share in state: 0.3%
Poor-condition share: 2,342
public highway bridges: 1983
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.

Bexar County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Bexar County ranks #91 of 247 Texas counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0.3%). Bexar County, Texas contains 2,342 public highway bridges. Roughly 55% are rated “Good,” 44.7% “Fair,” and 0.3% “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

2,342

Public highway bridges in Bexar County

Good condition

55%

1,288 of 2,342 rated 7-9

Fair condition

44.7%

1,048 of 2,342 rated 5-6

Poor condition

0.3%

6 of 2,342 rated 4 or below

In-state Poor-share rank

#91 of 247

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

Condition distribution

Share of 2,342 NBI-tracked bridges by lowest applicable component rating.

Good

55% (1,288)

Fair

44.7% (1,048)

Poor

0.3% (6)

Bexar County's Poor-condition bridges carry 44,847 vehicle crossings a day

That is 0.1% of the county's reported daily bridge traffic on 0.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 7,475 crossings a day against 24,169 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 2,342 of 2,342 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

34.8% of Bexar County's bridges have passed the 50-year mark

814 of the 2,342 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 55% 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 63.9% of the county's Poor-condition bridge traffic

IH 410 SB over Spur 117 (S WW White Rd), built 1966, carries 28,666 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 6-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 44,847 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

4
1910s

4
1920s

36
1930s

56
1940s

36
1950s

98
1960s

462
1970s

281
1980s

463
1990s

338
2000s

268
2010s

212
2020s

84

What this shows Construction peaked in the 1980s, when 463 of the county's bridges still in the inventory were built, which is 19.8% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1983) matches the Texas average (1980).

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

The 5 Texas counties nearest Bexar County in number of bridges, with their condition splits. Its 0.3% Poor share is the 3rd-lowest of these 6. Its average build year of 1983 against a peer-group mean of 1991 is 8 years older.

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

Bridge inventory size and condition shares for Bexar County and the 5 Texas counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Dallas County	3,230	42.5%	56.4%	1%	1983
Tarrant County	2,617	58.2%	41.4%	0.4%	1990
Bexar County (this page)	2,342	55%	44.7%	0.3%	1983
Travis County	1,544	63.9%	35.9%	0.2%	1988
Williamson County	1,170	67.4%	32.2%	0.3%	1995
Collin County	1,127	67%	32.9%	0.1%	1998

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 Bexar 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 Bexar County, both outside Texas so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside TX (2,342 bridges here).

Maricopa County, AZ · 2,847 bridges
Cook County, IL · 1,721 bridges
San Diego County, CA · 1,632 bridges
San Bernardino County, CA · 1,422 bridges

Similar average build year

Nearest mean year-built outside TX (1983 here).

Sedgwick County, KS · avg 1983 · 1,333 bridges
Will County, IL · avg 1983 · 649 bridges
Bernalillo County, NM · avg 1983 · 496 bridges
Black Hawk County, IA · avg 1983 · 489 bridges

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

All 2,342 Good 1,288 Fair 1,048 Poor 6

Fair-condition bridges (1,048)

Sort:

Bexar County Bridge Snapshot

Condition distribution

Bexar County's Poor-condition bridges carry 44,847 vehicle crossings a day

34.8% of Bexar County's bridges have passed the 50-year mark

One structure carries 63.9% of the county's Poor-condition bridge traffic

How Bexar 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

Fair-condition bridges (1,048)

IH 410 SB

MONTGOMERY ROAD

MOURSUND BLVD NB

MOURSUND BLVD SB

S WALTERS ST

IH 35 NB

IH 35 SB

IH 35 NB

IH 35 SB CONN-IH10

IH 10 EB

IH 10 WB

IH 37 SB

IH 37 NB

US 281 SBFR

IH 410 NB

IH 410 SB

IH 410 SB

LP 1604 EBML

S ALAMO ST

CASSIANO ST

Mission Road

OCONNOR RD

RUIZ ST

SAN PEDRO AVE

TAMPICO ST

EAST OUTER DR

OLYMPIA PKWY

IH 35 SB

IH 410 NBML

IH 10

IH 37 SB - CONN 1

LP13 (Military Dr)

LP 368

IH 410 SB

E COMMERCE ST

9TH ST

IH 35 NB ML

IH 35 SB ML

IH 10

IH 10 EB

IH 10 WB

IH 37 SB

IH 37 NB

IH 410 SB

IH 410 EB

IH 410 WB

FM 1560

GEMBLER RD

GUILBEAU RD

IH 35 SB ML

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