County profile · official public datasets

Rockwall County, TX

107 public highway bridges tracked in the FHWA National Bridge Inventory: 53.3% rated Good, 44.9% Fair, 1.9% Poor.

107
Public bridges: 53.3%
Good condition: 1.9%
Poor condition

The verdict

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

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

174th
of 247 on Poor share: 1.9%
Poor-condition share: 107
public highway bridges: 1989
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.

Rockwall County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Rockwall County ranks #174 of 247 Texas counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 1.9%). Rockwall County, Texas contains 107 public highway bridges. Roughly 53.3% are rated “Good,” 44.9% “Fair,” and 1.9% “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

107

Public highway bridges in Rockwall County

Good condition

53.3%

57 of 107 rated 7-9

Fair condition

44.9%

48 of 107 rated 5-6

Poor condition

1.9%

2 of 107 rated 4 or below

In-state Poor-share rank

#174 of 247

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

Condition distribution

Share of 107 NBI-tracked bridges by lowest applicable component rating.

Good

53.3% (57)

Fair

44.9% (48)

Poor

1.9% (2)

Rockwall County's Poor-condition bridges carry 108,211 vehicle crossings a day

That is 7.4% of the county's reported daily bridge traffic on 1.9% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 54,106 crossings a day against 8,660 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 107 of 107 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

32.7% of Rockwall County's bridges have passed the 50-year mark

35 of the 107 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 53.3% 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 75.8% of the county's Poor-condition bridge traffic

IH 30 over EAST FORK TRINITY RIVER, built 1995, carries 82,077 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 2-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 108,211 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1930s

1
1940s

7
1950s

18
1960s

6
1970s

3
1980s

4
1990s

16
2000s

30
2010s

21
2020s

1

What this shows Construction peaked in the 2000s, when 30 of the county's bridges still in the inventory were built, which is 28% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year is 1989, 9 years newer than the Texas average of 1980.

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

The 5 Texas counties nearest Rockwall County in number of bridges, with their condition splits. Its 1.9% Poor share is the 5th-lowest of these 6. Its average build year of 1989 against a peer-group mean of 1968 is 21 years newer.

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

Bridge inventory size and condition shares for Rockwall County and the 5 Texas counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Kendall County	112	55.4%	44.6%	0%	1975
Young County	109	56%	44%	0%	1965
Burnet County	108	56.5%	43.5%	0%	1974
Rockwall County (this page)	107	53.3%	44.9%	1.9%	1989
Wheeler County	104	38.5%	57.7%	3.8%	1967
Uvalde County	103	59.2%	40.8%	0%	1961

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

Similar inventory size

Nearest county inventories outside TX (107 bridges here).

Fannin County, GA · 107 bridges
Habersham County, GA · 107 bridges
Ware County, GA · 107 bridges
Magoffin County, KY · 107 bridges

Similar average build year

Nearest mean year-built outside TX (1989 here).

Mecklenburg County, NC · avg 1989 · 746 bridges
Buffalo County, NE · avg 1989 · 459 bridges
Dubuque County, IA · avg 1989 · 346 bridges
Vernon County, LA · avg 1989 · 341 bridges

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

All 107 Good 57 Fair 48 Poor 2

All bridges (107)

Sort:

Rockwall County Bridge Snapshot

Condition distribution

Rockwall County's Poor-condition bridges carry 108,211 vehicle crossings a day

32.7% of Rockwall County's bridges have passed the 50-year mark

One structure carries 75.8% of the county's Poor-condition bridge traffic

How Rockwall 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 (107)

CR 139

205 EXT (CR 164)

GREEN CIRCLE

IH 30

SH 205

SH 205

FM 551

FM 552

FM 1141

SH 276

SH 276

SH 276

SH 276

SH 276

SH 276

FM 548

KLUTTS DR - CR 160

IH 30

IH 30

IH 30

IH 30

SONORA TR

COUNTRY CLUB DR

MULBERRY RD

SHORES BLVD

KEY RD

KINGS PASS

Village Dr

FM 548

FM 549

FM 548

SH 66

SH 66

SH 66 WB

SH 66 EB

IH 30 WB

IH 30 EB

IH 30 EB

HORIZON RD

IH 30

IH 30 EB ML

IH 30 WB ML

IH 30 WB

FM 550

DOWELL RD

IH 30

IH 30 WB

IH 30 EB

SH 66

FM 548

Related