Total bridges
59
Public highway bridges in Marion County
County profile · official public datasets
Marion County, TX
59 public highway bridges tracked in the FHWA National Bridge Inventory: 50.8% rated Good, 47.5% Fair, 1.7% Poor.
- 59
- Public bridges
- 50.8%
- Good condition
- 1.7%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Marion 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.
- 167th
- of 247 on Poor share
- 1.7%
- Poor-condition share
- 59
- public highway bridges
- 1974
- 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.
Marion County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Marion County ranks #167 of 247 Texas counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 1.7%). Marion County, Texas contains 59 public highway bridges. Roughly 50.8% are rated “Good,” 47.5% “Fair,” and 1.7% “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
50.8%
30 of 59 rated 7-9
Fair condition
47.5%
28 of 59 rated 5-6
Poor condition
1.7%
1 of 59 rated 4 or below
In-state Poor-share rank
#167 of 247
Among Texas counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 59 NBI-tracked bridges by lowest applicable component rating.
Good 50.8% (30)
Fair 47.5% (28)
Poor 1.7% (1)
Marion County's Poor-condition bridges carry 4,762 vehicle crossings a day
That is 3.8% of the county's reported daily bridge traffic on 1.7% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 4,762 crossings a day against 1,155 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 59 of 59 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
55.9% of Marion County's bridges have passed the 50-year mark
33 of the 59 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 50.8% 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 100% of the county's Poor-condition bridge traffic
SH 155 over LAKE OF THE PINES, built 1954, carries 4,762 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 1-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 4,762 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Marion County's bridges were built
59 bridges with a recorded construction year, grouped by decade
- 1920s 3
1920–1929
3 bridges
- 1930s 1
1930–1939
1 bridges
- 1940s 1
1940–1949
1 bridges
- 1950s
1950–1959
20 bridges
- 1960s 7
1960–1969
7 bridges
- 1970s 2
1970–1979
2 bridges
- 1980s 4
1980–1989
4 bridges
- 1990s
1990–1999
8 bridges
- 2000s
2000–2009
9 bridges
- 2010s 3
2010–2019
3 bridges
- 2020s 1
2020–2029
1 bridges
What this shows Construction peaked in the 1950s, when 20 of the county's bridges still in the inventory were built, which is 33.9% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year is 1974, 6 years older than the Texas average of 1980.
How Marion County compares with Texas's closest counties by inventory size
The 5 Texas counties nearest Marion County in number of bridges, with their condition splits. Its 1.7% Poor share is the 3rd-lowest of these 6. Its average build year of 1974 against a peer-group mean of 1966 is 8 years newer.
Showing the 5 closest of 246 Texas counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Blanco County | 63 | 60.3% | 39.7% | 0% | 1961 |
| McMullen County | 63 | 63.5% | 33.3% | 3.2% | 1969 |
| Foard County | 60 | 20% | 75% | 5% | 1954 |
| Kleberg County | 60 | 46.7% | 53.3% | 0% | 1975 |
| Marion County (this page) | 59 | 50.8% | 47.5% | 1.7% | 1974 |
| Baylor County | 57 | 54.4% | 42.1% | 3.5% | 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 Marion 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 Marion County, both outside Texas so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside TX (59 bridges here).
- San Miguel County, CO · 59 bridges
- Glades County, FL · 59 bridges
- Red Lake County, MN · 59 bridges
- Washington County, NC · 59 bridges
Similar average build year
Nearest mean year-built outside TX (1974 here).
- Knox County, TN · avg 1974 · 588 bridges
- Summit County, OH · avg 1974 · 563 bridges
- Onondaga County, NY · avg 1974 · 472 bridges
- Orange County, NY · avg 1974 · 472 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (28)
PUBLIC RD. FM 726
FairOver: LAKE O THE PINES SPILLWY
LAKE O THE PINES DAM, Marion, TX
Built 1957 Load: 15.2 t ADT: 82
SH 43
FairOver: BIG CYPRESS BAYOU
AT HARRISON C/L, Marion, TX
Built 1965 Load: 19.0 t ADT: 1,244
US 59
FairOver: UP RR KCS RR W CLAY ST
0.25 MI N OF SH 49, Marion, TX
Built 1953 Load: 22.7 t ADT: 9,471
US 59 NB
FairOver: LITTLE CYPRESS BAYOU
AT HARRISON C/L, Marion, TX
Built 1953 Load: 22.7 t ADT: 5,809
US 59
FairOver: LITTLE CYPRESS RELIEF
0.70 MI N OF HARRISON C/L, Marion, TX
Built 1953 Load: 23.6 t ADT: 10,617
US 59
FairOver: BIG CYPRESS BAYOU REL
1.05 MI S OF SH 49, Marion, TX
Built 1987 Load: 23.6 t ADT: 11,165
FM 2208
FairOver: DRAW
1.45 MI NE OF FM 3001, Marion, TX
Built 1957 Load: 23.6 t ADT: 937
SH 49
FairOver: HAGGERY CREEK
0.80 MI E OF FM 248, Marion, TX
Built 1949 Load: 23.6 t ADT: 1,289
SH 49
FairOver: KITCHENS CREEK
0.60 MI W OF SH 43, Marion, TX
Built 1951 Load: 23.6 t ADT: 850
SH 43
FairOver: HASTY CREEK
0.10 MI S OF FM 805 W, Marion, TX
Built 1965 Load: 23.6 t ADT: 1,244
FM 729
FairOver: DRAW
1.40 MI NW OF SH 155, Marion, TX
Built 1959 Load: 23.6 t ADT: 1,161
FM 3001
FairOver: GILES CREEK
4.20 MI SE OF FM 726, Marion, TX
Built 1971 Load: 23.6 t ADT: 481
SH 49
FairOver: SHEP TAYLOR BRANCH
0.90 MI W OF FM 805, Marion, TX
Built 1926 Load: 24.5 t ADT: 1,289
SH 49
FairOver: STATFORD CREEK
0.15 MI E OF FM 727, Marion, TX
Built 1926 Load: 24.5 t ADT: 1,030
FM 134
FairOver: BIG CYPRESS BAYOU
0.80 MI N OF FM 2208, Marion, TX
Built 1921 Load: 24.5 t ADT: 1,200
FM 450
FairOver: SANDY CREEK
3.10 MI NW OF FM 726, Marion, TX
Built 1951 Load: 24.5 t ADT: 661
FM 2683
FairOver: DRAW
1.35 MI E OF FM 248, Marion, TX
Built 1989 Load: 24.5 t ADT: 138
US 59
FairOver: BIG CYPRESS BAYOU
0.60 MI S OF SH 49, Marion, TX
Built 1954 Load: 29.9 t ADT: 11,165
FM 729
FairOver: ALLEY CREEK
2.80 MI W OF FM 1969, Marion, TX
Built 1957 Load: 31.7 t ADT: 1,029
FM 729
FairOver: JOHNSON CREEK
0.70 MI W OF FM 1969, Marion, TX
Built 1957 Load: 31.7 t ADT: 1,562
FM 729
FairOver: HURRICANE CREEK
1.20 MI E OF FM 1969, Marion, TX
Built 1957 Load: 31.7 t ADT: 1,352
US 59
FairOver: BLACK CYPRESS BAYOU REL
1.40 MI N OF SH 49, Marion, TX
Built 1997 Load: 32.7 t ADT: 7,314
US 59
FairOver: BLACK CYPRESS BAYOU
1.20 MI N OF SH 49, Marion, TX
Built 1997 Load: 32.7 t ADT: 7,314
FM 248
FairOver: BEAR CREEK
0.15 MI S OF CASS C/L, Marion, TX
Built 2001 Load: 32.7 t ADT: 182
FM 134
FairOver: LITTLE CYPRESS BAYOU
AT HARRISON C/L, Marion, TX
Built 1993 Load: 32.7 t ADT: 747
WHITE OAK RD(4008)
FairOver: WHITE OAK CREEK
2.4 MI W OF US 59, Marion, TX
Built 2007 Load: 32.7 t ADT: 9
WILLOW PT MARINA
FairOver: DRAW
0.6 MI W OF FM 729, Marion, TX
Built 1953 Load: 32.7 t ADT: 23
US 59 SB
FairOver: LITTLE CYPRESS BAYOU
AT HARRISON CO LINE, Marion, TX
Built 1987 Load: 40.8 t ADT: 5,722
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.