Total bridges
362
Public highway bridges in Gibson County
County profile · official public datasets
Gibson County, IN
362 public highway bridges tracked in the FHWA National Bridge Inventory: 42.8% rated Good, 53% Fair, 4.1% Poor.
- 362
- Public bridges
- 42.8%
- Good condition
- 4.1%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Gibson County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 42%
- lowest Poor share in state
- 4.1%
- Poor-condition share
- 362
- public highway bridges
- 1978
- 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.
Gibson County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Gibson County ranks #39 of 92 Indiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.1%). Gibson County, Indiana contains 362 public highway bridges. Roughly 42.8% are rated “Good,” 53% “Fair,” and 4.1% “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
42.8%
155 of 362 rated 7-9
Fair condition
53%
192 of 362 rated 5-6
Poor condition
4.1%
15 of 362 rated 4 or below
In-state Poor-share rank
#39 of 92
Among Indiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 362 NBI-tracked bridges by lowest applicable component rating.
Good 42.8% (155)
Fair 53% (192)
Poor 4.1% (15)
Gibson County's Poor-condition bridges carry 1,123 vehicle crossings a day
That is 0.1% of the county's reported daily bridge traffic on 3.1% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 102 crossings a day against 4,467 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 358 of 362 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
41.2% of Gibson County's bridges have passed the 50-year mark
149 of the 362 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 42.8% 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 21.4% of the county's Poor-condition bridge traffic
CR 400 N over PATOKA RIVER, built 1979, carries 240 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 15-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 1,123 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Gibson County's bridges were built
362 bridges with a recorded construction year, grouped by decade
- pre-1900 3
Built before 1900
3 bridges
- 1900s 7
1900–1909
7 bridges
- 1910s 3
1910–1919
3 bridges
- 1920s 21
1920–1929
21 bridges
- 1930s 22
1930–1939
22 bridges
- 1940s 5
1940–1949
5 bridges
- 1950s 25
1950–1959
25 bridges
- 1960s
1960–1969
31 bridges
- 1970s
1970–1979
55 bridges
- 1980s
1980–1989
40 bridges
- 1990s
1990–1999
51 bridges
- 2000s
2000–2009
28 bridges
- 2010s
2010–2019
68 bridges
- 2020s 3
2020–2029
3 bridges
What this shows Construction peaked in the 2010s, when 68 of the county's bridges still in the inventory were built, which is 18.8% of those with a recorded year. That cohort is now 5 to 14 years old in the 2024 inventory. Its average build year (1978) matches the Indiana average (1978).
How Gibson County compares with Indiana's closest counties by inventory size
The 5 Indiana counties nearest Gibson County in number of bridges, with their condition splits. Its 4.1% Poor share is the 5th-lowest of these 6. Its average build year of 1978 against a peer-group mean of 1980 is in line with the group.
Showing the 5 closest of 91 Indiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Gibson County (this page) | 362 | 42.8% | 53% | 4.1% | 1978 |
| Hendricks County | 355 | 41.4% | 56.3% | 2.3% | 1982 |
| Wayne County | 343 | 41.1% | 54.8% | 4.1% | 1975 |
| Tippecanoe County | 330 | 55.2% | 39.7% | 5.2% | 1982 |
| Jackson County | 321 | 43.9% | 53.6% | 2.5% | 1981 |
| Madison County | 301 | 44.5% | 52.5% | 3% | 1978 |
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 Gibson 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 Gibson County, both outside Indiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IN (362 bridges here).
- Fayette County, IA · 362 bridges
- Muskingum County, OH · 363 bridges
- Lackawanna County, PA · 363 bridges
- Grays Harbor County, WA · 363 bridges
Similar average build year
Nearest mean year-built outside IN (1978 here).
- Orange County, CA · avg 1978 · 1,164 bridges
- Sumner County, KS · avg 1978 · 659 bridges
- Livingston County, IL · avg 1978 · 579 bridges
- Buncombe County, NC · avg 1978 · 555 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (15)
CR 1675 W
PoorOver: BIG BAYOU
00.80 E OF CR 1750 W, Gibson, IN
Built 1875 Load: 0.0 t
MOORES BRIDGE RD
PoorOver: PATOKA RIVER
00.40 E OF WHEELING RD, Gibson, IN
Built 1877 Load: 0.0 t
CR 1800 W
PoorOver: BIG BAYOU
00.80 N OF CR 850 S, Gibson, IN
Built 1895 Load: 0.0 t
CR 376 W
PoorOver: ABANDONED RR
00.10 N OF MOUNTS RD, Gibson, IN
Built 1920 Load: 0.0 t
CR 650 S
PoorOver: ABANDONED RR
00.40 E OF CR 950 W, Gibson, IN
Built 1920 Load: 6.1 t ADT: 100
CR 350 W
PoorOver: HULL DITCH
00.10 N OF CR 350 N, Gibson, IN
Built 1941 Load: 10.2 t ADT: 110
MOORES BRIDGE RD
PoorOver: PATOKA RIVER
00.40 E OF WHEELING RD, Gibson, IN
Built 1973 Load: 11.3 t ADT: 200
CR 1200 W
PoorOver: SCOTT DITCH
00.40 S OF CR 350 S, Gibson, IN
Built 1967 Load: 11.3 t ADT: 40
CR 400 N
PoorOver: PATOKA RIVER
00.40 W OF CR 350 E, Gibson, IN
Built 1979 Load: 15.3 t ADT: 240
CR 600 S
PoorOver: DONOHUE CREEK
00.20 E OF CR 1025 E, Gibson, IN
Built 1970 Load: 16.5 t ADT: 148
CR 525 S
PoorOver: LOEFLER DITCH
00.30 E OF CR 500 W, Gibson, IN
Built 1900 Load: 31.8 t ADT: 10
CR 500 E
PoorOver: BRANCH OF SNAKE RUN
00.80 N OF SR 168, Gibson, IN
Built 1900 Load: 39.1 t ADT: 5
CR 900 S
PoorOver: SMITH FORK
01.00 W OF SR 57, Gibson, IN
Built 1973 Load: 41.9 t ADT: 110
CR 350 S
PoorOver: BRANCH OF SAND CREEK
00.80 W OF CR 450 E, Gibson, IN
Built 1926 Load: 42.9 t ADT: 140
CR 1050 E
PoorOver: SMITH FORK
00.80 N OF CR 900 S, Gibson, IN
Built 1992 Load: 47.5 t ADT: 20
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.