Total bridges
212
Public highway bridges in Clinton County
County profile · official public datasets
Clinton County, PA
212 public highway bridges tracked in the FHWA National Bridge Inventory: 42.9% rated Good, 54.7% Fair, 2.4% Poor.
- 212
- Public bridges
- 42.9%
- Good condition
- 2.4%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Clinton County pairs a top-1% lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- Top 1%
- lowest Poor share in state
- 2.4%
- Poor-condition share
- 212
- 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.
Clinton County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Clinton County ranks #1 of 67 Pennsylvania counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.4%). Clinton County, Pennsylvania contains 212 public highway bridges. Roughly 42.9% are rated “Good,” 54.7% “Fair,” and 2.4% “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
42.9%
91 of 212 rated 7-9
Fair condition
54.7%
116 of 212 rated 5-6
Poor condition
2.4%
5 of 212 rated 4 or below
In-state Poor-share rank
#1 of 67
Among Pennsylvania counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 212 NBI-tracked bridges by lowest applicable component rating.
Good 42.9% (91)
Fair 54.7% (116)
Poor 2.4% (5)
Clinton County's Poor-condition bridges carry 2,290 vehicle crossings a day
That is 0.3% of the county's reported daily bridge traffic on 2.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 458 crossings a day against 2,265 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 212 of 212 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
42% of Clinton County's bridges have passed the 50-year mark
89 of the 212 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 42.9% 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 67.7% of the county's Poor-condition bridge traffic
SR 880-PA 880 over RAUCHTOWN CREEK, built 1930, carries 1,550 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 5-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 2,290 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
212 bridges with a recorded construction year, grouped by decade
- pre-1900 1
Built before 1900
1 bridges
- 1900s 2
1900–1909
2 bridges
- 1910s 1
1910–1919
1 bridges
- 1920s 7
1920–1929
7 bridges
- 1930s 15
1930–1939
15 bridges
- 1940s 3
1940–1949
3 bridges
- 1950s 10
1950–1959
10 bridges
- 1960s
1960–1969
29 bridges
- 1970s
1970–1979
56 bridges
- 1980s 16
1980–1989
16 bridges
- 1990s 15
1990–1999
15 bridges
- 2000s
2000–2009
30 bridges
- 2010s 22
2010–2019
22 bridges
- 2020s 5
2020–2029
5 bridges
What this shows Construction peaked in the 1970s, when 56 of the county's bridges still in the inventory were built, which is 26.4% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year is 1978, 8 years newer than the Pennsylvania average of 1970.
How Clinton County compares with Pennsylvania's closest counties by inventory size
The 5 Pennsylvania counties nearest Clinton County in number of bridges, with their condition splits. Its 2.4% Poor share is the 1st-lowest of these 6. Its average build year of 1978 against a peer-group mean of 1975 is in line with the group.
Showing the 5 closest of 66 Pennsylvania counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Lebanon County | 228 | 28.9% | 62.3% | 8.8% | 1971 |
| McKean County | 226 | 43.8% | 37.6% | 18.6% | 1979 |
| Warren County | 217 | 36.4% | 45.2% | 18.4% | 1974 |
| Clinton County (this page) | 212 | 42.9% | 54.7% | 2.4% | 1978 |
| Potter County | 207 | 44.9% | 42% | 13% | 1979 |
| Jefferson County | 202 | 29.2% | 63.9% | 6.9% | 1972 |
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 Pennsylvania so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside PA (212 bridges here).
- Holmes County, MS · 212 bridges
- Comanche County, TX · 212 bridges
- Dodge County, WI · 212 bridges
- Bonneville County, ID · 213 bridges
Similar average build year
Nearest mean year-built outside PA (1978 here).
- Orange County, CA · avg 1978 · 1,164 bridges
- Sumner County, KS · avg 1978 · 659 bridges
- Allen County, IN · avg 1978 · 613 bridges
- Livingston County, IL · avg 1978 · 579 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (5)
T-537
PoorOver: FISHING CREEK
0.3 MI. NE OF TYLERSVILLE, Clinton, PA
Built 1901 Load: 0.0 t ADT: 125
EAST CHURCH STREET
PoorOver: FISHING CREEK
MILL HALL BOROUGH, Clinton, PA
Built 1973 Load: 0.0 t ADT: 250
T-349
PoorOver: FISHING CREEK
2 MI. WEST OF TYLERSVILLE, Clinton, PA
Built 1950 Load: 2.7 t ADT: 175
SR 4001
PoorOver: KETTLE CREEK
4 MILE SOUTH LEIDY, Clinton, PA
Built 1963 Load: 10.9 t ADT: 190
SR 880-PA 880
PoorOver: RAUCHTOWN CREEK
RAVENSBURG PARK, Clinton, PA
Built 1930 Load: 33.6 t ADT: 1,550
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.