Total bridges
210
Public highway bridges in Clinton County
County profile · official public datasets
Clinton County, IN
210 public highway bridges tracked in the FHWA National Bridge Inventory: 32.4% rated Good, 62.4% Fair, 5.2% Poor.
- 210
- Public bridges
- 32.4%
- Good condition
- 5.2%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Clinton 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.
- 53rd
- of 92 on Poor share
- 5.2%
- Poor-condition share
- 210
- public highway bridges
- 1971
- 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.
Clinton County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Clinton County ranks #53 of 92 Indiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.2%). Clinton County, Indiana contains 210 public highway bridges. Roughly 32.4% are rated “Good,” 62.4% “Fair,” and 5.2% “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
32.4%
68 of 210 rated 7-9
Fair condition
62.4%
131 of 210 rated 5-6
Poor condition
5.2%
11 of 210 rated 4 or below
In-state Poor-share rank
#53 of 92
Among Indiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 210 NBI-tracked bridges by lowest applicable component rating.
Good 32.4% (68)
Fair 62.4% (131)
Poor 5.2% (11)
Clinton County's Poor-condition bridges carry 5,754 vehicle crossings a day
That is 1.1% of the county's reported daily bridge traffic on 5.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 523 crossings a day against 2,666 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 210 of 210 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
51.9% of Clinton County's bridges have passed the 50-year mark
109 of the 210 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 32.4% 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 55.8% of the county's Poor-condition bridge traffic
CR 150 S (KELLEY) over PRAIRIE CREEK, built 1954, carries 3,209 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 11-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 5,754 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Clinton County's bridges were built
210 bridges with a recorded construction year, grouped by decade
- 1900s 1
1900–1909
1 bridges
- 1920s
1920–1929
20 bridges
- 1930s
1930–1939
17 bridges
- 1940s 7
1940–1949
7 bridges
- 1950s
1950–1959
20 bridges
- 1960s
1960–1969
28 bridges
- 1970s
1970–1979
31 bridges
- 1980s
1980–1989
29 bridges
- 1990s
1990–1999
30 bridges
- 2000s
2000–2009
15 bridges
- 2010s 8
2010–2019
8 bridges
- 2020s 4
2020–2029
4 bridges
What this shows Construction peaked in the 1970s, when 31 of the county's bridges still in the inventory were built, which is 14.8% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year is 1971, 7 years older than the Indiana average of 1978.
How Clinton County compares with Indiana's closest counties by inventory size
The 5 Indiana counties nearest Clinton County in number of bridges, with their condition splits. Its 5.2% Poor share is the 5th-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1978 is 7 years older.
Showing the 5 closest of 91 Indiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Sullivan County | 217 | 29.5% | 65.4% | 5.1% | 1966 |
| White County | 214 | 36% | 60.3% | 3.7% | 1978 |
| Clinton County (this page) | 210 | 32.4% | 62.4% | 5.2% | 1971 |
| Posey County | 208 | 47.1% | 47.1% | 5.8% | 1982 |
| Henry County | 206 | 30.6% | 65% | 4.4% | 1978 |
| Hancock County | 201 | 58.2% | 41.8% | 0% | 1985 |
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 Clinton 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 Clinton County, both outside Indiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IN (210 bridges here).
- Fulton County, IL · 210 bridges
- Howard County, IA · 210 bridges
- Montgomery County, IA · 210 bridges
- Calloway County, KY · 210 bridges
Similar average build year
Nearest mean year-built outside IN (1971 here).
- Wayne County, MI · avg 1971 · 1,026 bridges
- Baltimore County, MD · avg 1971 · 783 bridges
- Washington County, PA · avg 1971 · 655 bridges
- Linn County, OR · avg 1971 · 566 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (68)
CR 800E
GoodOver: KILMORE CREEK
00.10 S OF CR 500 N, Clinton, IN
Built 1979 Load: 38.3 t ADT: 204
KYGER STREET
GoodOver: PRAIRIE CREEK
0.40 E OF PRAIRIE STREET, Clinton, IN
Built 1994 Load: 38.4 t ADT: 306
CR 600 W
GoodOver: CRIPE RUN
00.40 S of CR 800 N, Clinton, IN
Built 1984 Load: 38.6 t ADT: 775
CR 280 NORTH
GoodOver: SOUTH FORK WILDCAT CREEK
0.10 E OF CR 750 W, Clinton, IN
Built 1994 Load: 38.8 t ADT: 1,105
E MORRISON STREET
GoodOver: PRAIRIE CREEK
0.10 E OF SR 39, Clinton, IN
Built 2016 Load: 40.5 t ADT: 2,436
CR 1200 E
GoodOver: SUGAR Creek
00.30 S of CR 300 S, Clinton, IN
Built 1992 Load: 40.7 t ADT: 102
CR 300 N
GoodOver: SOUTH FORK WILDCAT CREEK
00.10 W OF CR 530 E, Clinton, IN
Built 2010 Load: 40.7 t ADT: 102
CR 100 WEST
GoodOver: BOYLES DITCH
0.20 S OF CR 500 N, Clinton, IN
Built 1994 Load: 41.1 t ADT: 102
CR 130 W
GoodOver: KILMORE CREEK
00.50 S OF CR 400 N, Clinton, IN
Built 1998 Load: 41.2 t ADT: 102
CR 250 NORTH
GoodOver: S FORK WILDCAT CREEK
0.20 W OF CR 250 E, Clinton, IN
Built 2023 Load: 42.8 t ADT: 239
SR 38
GoodOver: BRUSH CREEK
01.26 E SR 39, Clinton, IN
Built 1930 Load: 44.4 t ADT: 799
SR 38
GoodOver: SUGAR CREEK
01.90 W S JCT US 421, Clinton, IN
Built 1968 Load: 44.7 t ADT: 710
US 421
GoodOver: CAMPBELLS RUN
00.28 S SR 26, Clinton, IN
Built 2023 Load: 47.6 t ADT: 3,497
SR 26
GoodOver: CAMPBELLS RUN
00.72 W US 421, Clinton, IN
Built 1937 Load: 49.0 t ADT: 7,458
CR 200 NORTH
GoodOver: S FORK OF WILDCAT CREEK
0.40 W OF CR 730 E, Clinton, IN
Built 1983 Load: 53.7 t ADT: 204
US 421
GoodOver: MCCLAMROCK DITCH
01.07 S SR 38, Clinton, IN
Built 1973 Load: 53.8 t ADT: 4,564
CR 200 WEST
GoodOver: BRUSH CREEK
0.10 N OF CR 580 S, Clinton, IN
Built 2015 Load: 63.2 t ADT: 225
SR 39
GoodOver: BRUSH CREEK
00.62 S SR 38, Clinton, IN
Built 1988 Load: 91.7 t ADT: 4,698
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.