County profile · official public datasets

Llano County, TX

84 public highway bridges tracked in the FHWA National Bridge Inventory: 40.5% rated Good, 59.5% Fair, 0% Poor.

84
Public bridges: 40.5%
Good condition: 0%
Poor condition

The verdict

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

Llano County pairs a top-quartile lowest Poor-condition share among rated counties in the state with an older average build year than the state inventory.

Top 15%
lowest Poor share in state: 0%
Poor-condition share: 84
public highway bridges: 1953
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.

Llano County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Llano County ranks #36 of 247 Texas counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Llano County, Texas contains 84 public highway bridges. Roughly 40.5% are rated “Good,” 59.5% “Fair,” and 0% “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

Public highway bridges in Llano County

Good condition

40.5%

34 of 84 rated 7-9

Fair condition

59.5%

50 of 84 rated 5-6

Poor condition

0 of 84 rated 4 or below

In-state Poor-share rank

#36 of 247

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

Condition distribution

Share of 84 NBI-tracked bridges by lowest applicable component rating.

Good

40.5% (34)

Fair

59.5% (50)

Poor

0% (0)

84.5% of Llano County's bridges have passed the 50-year mark

71 of the 84 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 40.5% 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.

1920s

2
1930s

27
1940s

17
1950s

14
1960s

9
1970s

3
1980s

3
1990s

6
2010s

2
2020s

1

What this shows Construction peaked in the 1930s, when 27 of the county's bridges still in the inventory were built, which is 32.1% of those with a recorded year. That cohort is now 85 to 94 years old in the 2024 inventory. Its average build year is 1953, 27 years older than the Texas average of 1980.

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

The 5 Texas counties nearest Llano County in number of bridges, with their condition splits. Its 0% Poor share is the 2nd-lowest of these 6. Its average build year of 1953 against a peer-group mean of 1964 is 11 years older.

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

Bridge inventory size and condition shares for Llano County and the 5 Texas counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Mason County	84	45.2%	54.8%	0%	1952
Llano County (this page)	84	40.5%	59.5%	0%	1953
Hood County	83	47%	51.8%	1.2%	1974
Trinity County	81	55.6%	40.7%	3.7%	1975
Cottle County	80	31.3%	67.5%	1.3%	1960
Haskell County	80	46.3%	52.5%	1.3%	1958

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

Similar inventory size

Nearest county inventories outside TX (84 bridges here).

Chaffee County, CO · 84 bridges
Elbert County, GA · 84 bridges
Glynn County, GA · 84 bridges
Paulding County, GA · 84 bridges

Similar average build year

Nearest mean year-built outside TX (1953 here).

Kings County, NY · avg 1953 · 242 bridges
Parke County, IN · avg 1953 · 200 bridges
Warren County, NJ · avg 1952 · 268 bridges
Glenn County, CA · avg 1954 · 242 bridges

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

All 84 Good 34 Fair 50 Poor 0

Good-condition bridges (34)

Sort:

Llano County Bridge Snapshot

Condition distribution

84.5% of Llano County's bridges have passed the 50-year mark

How Llano 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

Good-condition bridges (34)

SH 29

SH 29

SH 29

SH 29

SH 29

SH 29

SH 16

SH 71

SH 71

SH 71

RM 2241

RM 2323

RM 2323

TARRANT ST

SH 71

RM 2545

SH 29

SH 16

SH 16

SH 16

SH 16

SH 261

RM 2233

SHEFFIELD AVE

RM 2147

RM 2147

SH 29

RM 152

RM 152

RM 2900

CR 103

CR202 (LONE GROVE)

RM 2241

RM 2241

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