Total bridges
22
Public highway bridges in Dallam County
County profile · official public datasets
Dallam County, TX
22 public highway bridges tracked in the FHWA National Bridge Inventory: 54.5% rated Good, 45.5% Fair, 0% Poor.
- 22
- Public bridges
- 54.5%
- Good condition
- 0%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Dallam County pairs a better-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- Top 30%
- lowest Poor share in state
- 0%
- Poor-condition share
- 22
- public highway bridges
- 1966
- 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.
Dallam County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Dallam County ranks #73 of 247 Texas counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Dallam County, Texas contains 22 public highway bridges. Roughly 54.5% are rated “Good,” 45.5% “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.
Good condition
54.5%
12 of 22 rated 7-9
Fair condition
45.5%
10 of 22 rated 5-6
Poor condition
0%
0 of 22 rated 4 or below
In-state Poor-share rank
#73 of 247
Among Texas counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 22 NBI-tracked bridges by lowest applicable component rating.
Good 54.5% (12)
Fair 45.5% (10)
Poor 0% (0)
68.2% of Dallam County's bridges have passed the 50-year mark
15 of the 22 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 54.5% 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.
When Dallam County's bridges were built
22 bridges with a recorded construction year, grouped by decade
- 1930s
1930–1939
4 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s
1950–1959
9 bridges
- 1990s 1
1990–1999
1 bridges
- 2000s
2000–2009
4 bridges
- 2010s 2
2010–2019
2 bridges
What this shows Construction peaked in the 1950s, when 9 of the county's bridges still in the inventory were built, which is 40.9% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year is 1966, 14 years older than the Texas average of 1980.
How Dallam County compares with Texas's closest counties by inventory size
The 5 Texas counties nearest Dallam County in number of bridges, with their condition splits. Its 0% Poor share is the 3rd-lowest of these 6. Its average build year of 1966 against a peer-group mean of 1967 is in line with the group.
Showing the 5 closest of 246 Texas counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Deaf Smith County | 26 | 46.2% | 50% | 3.8% | 1961 |
| Aransas County | 22 | 77.3% | 22.7% | 0% | 1997 |
| Roberts County | 22 | 50% | 50% | 0% | 1952 |
| Dallam County (this page) | 22 | 54.5% | 45.5% | 0% | 1966 |
| Crane County | 19 | 31.6% | 68.4% | 0% | 1943 |
| Martin County | 19 | 68.4% | 31.6% | 0% | 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 Dallam 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 Dallam County, both outside Texas so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside TX (22 bridges here).
- Glascock County, GA · 22 bridges
- Scott County, KS · 22 bridges
- Wichita County, KS · 22 bridges
- Currituck County, NC · 22 bridges
Similar average build year
Nearest mean year-built outside TX (1966 here).
- Butler County, KS · avg 1966 · 591 bridges
- Grafton County, NH · avg 1966 · 544 bridges
- Queens County, NY · avg 1966 · 514 bridges
- Lehigh County, PA · avg 1966 · 381 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (22)
US 287
FairOver: Drainage Ditch
1.7 Mi SE of FM 807, Dallam, TX
Built 1945 Load: 23.6 t ADT: 2,791
US 385
FairOver: Coldwater Creek
25.7 Mi N of US 87, Dallam, TX
Built 1943 Load: 23.6 t ADT: 396
FM 296
FairOver: Draw
6.4 Mi S of US 87, Dallam, TX
Built 1950 Load: 23.6 t ADT: 230
FM 296
FairOver: Carrizo Creek
10.7 Mi S of US 87, Dallam, TX
Built 1953 Load: 23.6 t ADT: 230
FM 1879
FairOver: Rita Blanca Creek
7.1 Mi N of US 87, Dallam, TX
Built 1953 Load: 23.6 t ADT: 131
FM 1727
FairOver: Rita Blanca Creek
2.5 Mi W of US 87, Dallam, TX
Built 1996 Load: 24.5 t ADT: 771
FM 807
FairOver: Coldwater Creek
8.25 Mi N of US 54, Dallam, TX
Built 1956 Load: 27.2 t ADT: 155
US 87 SB
FairOver: Rita Blanca Creek
2.9 Mi E of FM 296, Dallam, TX
Built 2006 Load: 32.7 t ADT: 1,837
US 87 NB
FairOver: Rita Blanca Creek
6.8 Mi N of US 54, Dallam, TX
Built 2012 Load: 32.7 t ADT: 2,867
SH 102
FairOver: Carrizo Creek
0.6 Mi E of FM 3110, Dallam, TX
Built 2002 Load: 32.7 t ADT: 386
US 87
GoodOver: Draw
0.5 Mi S of FM 3110, Dallam, TX
Built 1955 Load: 23.6 t ADT: 4,264
US 54
GoodOver: Draw
1.5 Mi SW of FM 807, Dallam, TX
Built 1938 Load: 23.6 t ADT: 2,917
US 54
GoodOver: Draw
0.9 Mi SW of FM 807, Dallam, TX
Built 1938 Load: 23.6 t ADT: 2,917
US 54
GoodOver: Draw
2.2 Mi NE of FM 807, Dallam, TX
Built 1938 Load: 23.6 t ADT: 3,742
US 54
GoodOver: Draw
4.0 Mi NE of FM 807, Dallam, TX
Built 1938 Load: 23.6 t ADT: 3,742
FM 296
GoodOver: E Rita Blanca Creek
0.15 Mi S of FM 2586, Dallam, TX
Built 1951 Load: 23.6 t ADT: 268
FM 296
GoodOver: Junkyard Creek
1.2 Mi S of US 87, Dallam, TX
Built 1951 Load: 23.6 t ADT: 334
SH 102
GoodOver: Draw
0.2 Mi E of FM 3110, Dallam, TX
Built 1951 Load: 23.6 t ADT: 386
US 87 NB
GoodOver: Rita Blanca Creek
2.9 Mi E of FM 296, Dallam, TX
Built 2005 Load: 32.7 t ADT: 2,234
US 87 SB
GoodOver: Rita Blanca Creek
6.8 Mi N of US 54, Dallam, TX
Built 2012 Load: 32.7 t ADT: 3,028
FM 296
GoodOver: West Rita Blanca Creek
1.5 Mi S of US 87, Dallam, TX
Built 2003 Load: 32.7 t ADT: 334
FM 296
GoodOver: E Rita Blanca Creek 1
4.1 Mi E of US 87, Dallam, TX
Built 1953 Load: 40.8 t ADT: 268
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.