Total bridges
119
Public highway bridges in Hamilton County
County profile · official public datasets
Hamilton County, TX
119 public highway bridges tracked in the FHWA National Bridge Inventory: 37.8% rated Good, 59.7% Fair, 2.5% Poor.
- 119
- Public bridges
- 37.8%
- Good condition
- 2.5%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Hamilton County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- 196th
- of 247 on Poor share
- 2.5%
- Poor-condition share
- 119
- public highway bridges
- 1963
- 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.
Hamilton County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Hamilton County ranks #196 of 247 Texas counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.5%). Hamilton County, Texas contains 119 public highway bridges. Roughly 37.8% are rated “Good,” 59.7% “Fair,” and 2.5% “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.
Good condition
37.8%
45 of 119 rated 7-9
Fair condition
59.7%
71 of 119 rated 5-6
Poor condition
2.5%
3 of 119 rated 4 or below
In-state Poor-share rank
#196 of 247
Among Texas counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 119 NBI-tracked bridges by lowest applicable component rating.
Good 37.8% (45)
Fair 59.7% (71)
Poor 2.5% (3)
Hamilton County's Poor-condition bridges carry 613 vehicle crossings a day
That is 0.4% of the county's reported daily bridge traffic on 2.5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 204 crossings a day against 1,090 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 119 of 119 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
69.7% of Hamilton County's bridges have passed the 50-year mark
83 of the 119 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 37.8% 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 76.3% of the county's Poor-condition bridge traffic
IREDELL ST over JACKS HOLLOW CRK #3 HIC, built 1931, carries 468 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 3-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 613 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Hamilton County's bridges were built
119 bridges with a recorded construction year, grouped by decade
- 1900s 1
1900–1909
1 bridges
- 1920s 3
1920–1929
3 bridges
- 1930s
1930–1939
18 bridges
- 1940s
1940–1949
29 bridges
- 1950s
1950–1959
25 bridges
- 1960s 6
1960–1969
6 bridges
- 1970s 1
1970–1979
1 bridges
- 1980s 3
1980–1989
3 bridges
- 1990s 10
1990–1999
10 bridges
- 2000s
2000–2009
18 bridges
- 2010s 3
2010–2019
3 bridges
- 2020s 2
2020–2029
2 bridges
What this shows Construction peaked in the 1940s, when 29 of the county's bridges still in the inventory were built, which is 24.4% of those with a recorded year. That cohort is now 75 to 84 years old in the 2024 inventory. Its average build year is 1963, 17 years older than the Texas average of 1980.
How Hamilton County compares with Texas's closest counties by inventory size
The 5 Texas counties nearest Hamilton County in number of bridges, with their condition splits. Its 2.5% Poor share is the 4th-lowest of these 6. Its average build year of 1963 against a peer-group mean of 1965 is in line with the group.
Showing the 5 closest of 246 Texas counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Duval County | 121 | 46.3% | 52.9% | 0.8% | 1955 |
| Madison County | 121 | 28.1% | 68.6% | 3.3% | 1969 |
| Wood County | 120 | 40.8% | 57.5% | 1.7% | 1972 |
| Hamilton County (this page) | 119 | 37.8% | 59.7% | 2.5% | 1963 |
| McCulloch County | 118 | 46.6% | 53.4% | 0% | 1958 |
| Hall County | 117 | 35% | 62.4% | 2.6% | 1969 |
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 Hamilton 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 Hamilton County, both outside Texas so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside TX (119 bridges here).
- Carroll County, AR · 119 bridges
- Grant County, AR · 119 bridges
- Stafford County, KS · 119 bridges
- Grayson County, KY · 119 bridges
Similar average build year
Nearest mean year-built outside TX (1963 here).
- Worcester County, MA · avg 1963 · 1,014 bridges
- Honolulu County, HI · avg 1963 · 682 bridges
- Chester County, PA · avg 1963 · 680 bridges
- Essex County, NJ · avg 1963 · 505 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (71)
FM 218
FairOver: COWHOUSE CREEK
2.1 MI W OF FM 1702, Hamilton, TX
Built 2004 Load: 32.7 t ADT: 170
SH 36
FairOver: LEON RIVER
1.3 MI NW OF FM 1602, Hamilton, TX
Built 1999 Load: 32.7 t ADT: 2,330
SH 36
FairOver: LEON RIVER RELIEF
1.2 MI NW OF FM 1602, Hamilton, TX
Built 1999 Load: 32.7 t ADT: 2,330
US 281
FairOver: MESQUITE CREEK
8.8 MI N OF SH 36, Hamilton, TX
Built 1940 Load: 32.7 t ADT: 3,986
US 281
FairOver: BOSQUE RIVER
0.4 MI S OF SH 6, Hamilton, TX
Built 1942 Load: 32.7 t ADT: 6,992
FM 221
FairOver: COWHOUSE CREEK
0.2 MI S OF FM 218, Hamilton, TX
Built 2012 Load: 32.7 t ADT: 100
FM 219
FairOver: MERIDIAN CREEK
2.0 MI SE OF FM 1238, Hamilton, TX
Built 1956 Load: 32.7 t ADT: 280
FM 1702
FairOver: COWHOUSE CREEK
3.0 MI N OF FM 218, Hamilton, TX
Built 1957 Load: 32.7 t ADT: 101
CR 101
FairOver: LEON RI #203
4.20 MI N OF HAMILTON C/L, Hamilton, TX
Built 1997 Load: 32.7 t ADT: 115
CR 106
FairOver: LEON RIVER #201
1.60 MI NE OF SH 36, Hamilton, TX
Built 2005 Load: 32.7 t ADT: 42
CR 626
FairOver: COWHOUSE CRK #102
1.55 MI N OF FM 218, Hamilton, TX
Built 2000 Load: 32.7 t ADT: 15
SH 22
FairOver: TWO MILE CREEK
1.8 MI E OF SH 36, Hamilton, TX
Built 1948 Load: 33.6 t ADT: 1,606
SH 36
FairOver: FERNASH CREEK
8.4 MI NW OF FM 1602, Hamilton, TX
Built 1938 Load: 33.6 t ADT: 2,308
SH 22
FairOver: LEON RIVER
6.0 MI E OF SH 36, Hamilton, TX
Built 1948 Load: 34.5 t ADT: 764
SH 22
FairOver: SYCAMORE CREEK
1.2 MI W OF FM 1602, Hamilton, TX
Built 1948 Load: 34.5 t ADT: 764
SH 36
FairOver: PECAN CREEK
0.2 MI SE OF US 281, Hamilton, TX
Built 1948 Load: 36.3 t ADT: 7,321
SH 36
FairOver: BEAR CREEK
4.3 MI NW OF US 281, Hamilton, TX
Built 1941 Load: 40.8 t ADT: 1,713
FM 1602
FairOver: HONEY CREEK
2.2 MI SE OF US 281, Hamilton, TX
Built 1993 Load: 40.8 t ADT: 736
CR 301
FairOver: LEON RIVER TRIB #224
0.50 MI W OF FM 1602, Hamilton, TX
Built 2003 Load: 40.8 t ADT: 45
CR 410
FairOver: PLUM CRK #228
3.80 MI E OF FM 1241, Hamilton, TX
Built 2008 Load: 40.8 t ADT: 100
RAILROAD AVE
FairOver: GRUBBS BR #5 HIC
0.25 MI W OF US 281, Hamilton, TX
Built 1940 Load: 40.8 t ADT: 440
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.