Total bridges
271
Public highway bridges in Columbia County
County profile · official public datasets
Columbia County, PA
271 public highway bridges tracked in the FHWA National Bridge Inventory: 42.8% rated Good, 47.2% Fair, 10% Poor.
- 271
- Public bridges
- 42.8%
- Good condition
- 10%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Columbia 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 36%
- lowest Poor share in state
- 10%
- Poor-condition share
- 271
- public highway bridges
- 1965
- 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.
Columbia County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Columbia County ranks #24 of 67 Pennsylvania counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10%). Columbia County, Pennsylvania contains 271 public highway bridges. Roughly 42.8% are rated “Good,” 47.2% “Fair,” and 10% “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%
116 of 271 rated 7-9
Fair condition
47.2%
128 of 271 rated 5-6
Poor condition
10%
27 of 271 rated 4 or below
In-state Poor-share rank
#24 of 67
Among Pennsylvania counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 271 NBI-tracked bridges by lowest applicable component rating.
Good 42.8% (116)
Fair 47.2% (128)
Poor 10% (27)
Columbia County's Poor-condition bridges carry 6,197 vehicle crossings a day
That is 0.8% of the county's reported daily bridge traffic on 10% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 230 crossings a day against 3,224 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 270 of 271 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
64.2% of Columbia County's bridges have passed the 50-year mark
174 of the 271 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 26.6% of the county's Poor-condition bridge traffic
SR 1022 over OLD CHANNEL TO FISH CRK, built 1947, carries 1,650 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 27-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 6,197 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Columbia County's bridges were built
271 bridges with a recorded construction year, grouped by decade
- pre-1900 10
Built before 1900
10 bridges
- 1900s 8
1900–1909
8 bridges
- 1910s 7
1910–1919
7 bridges
- 1920s 11
1920–1929
11 bridges
- 1930s
1930–1939
27 bridges
- 1940s 17
1940–1949
17 bridges
- 1950s
1950–1959
29 bridges
- 1960s
1960–1969
44 bridges
- 1970s
1970–1979
24 bridges
- 1980s
1980–1989
23 bridges
- 1990s 12
1990–1999
12 bridges
- 2000s
2000–2009
27 bridges
- 2010s
2010–2019
28 bridges
- 2020s 4
2020–2029
4 bridges
What this shows Construction peaked in the 1960s, when 44 of the county's bridges still in the inventory were built, which is 16.2% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1965, 5 years older than the Pennsylvania average of 1970.
How Columbia County compares with Pennsylvania's closest counties by inventory size
The 5 Pennsylvania counties nearest Columbia County in number of bridges, with their condition splits. Its 10% Poor share is the 3rd-lowest of these 6. Its average build year of 1965 against a peer-group mean of 1973 is 8 years older.
Showing the 5 closest of 66 Pennsylvania counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Cambria County | 284 | 35.9% | 56.7% | 7.4% | 1975 |
| Susquehanna County | 284 | 36.3% | 44.7% | 19% | 1969 |
| Columbia County (this page) | 271 | 42.8% | 47.2% | 10% | 1965 |
| Lawrence County | 265 | 47.5% | 41.1% | 11.3% | 1978 |
| Armstrong County | 263 | 33.5% | 58.6% | 8% | 1976 |
| Wayne County | 259 | 27% | 41.7% | 31.3% | 1967 |
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 Columbia 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 Columbia County, both outside Pennsylvania so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside PA (271 bridges here).
- Morgan County, AL · 271 bridges
- Yolo County, CA · 271 bridges
- Yazoo County, MS · 271 bridges
- Hall County, NE · 271 bridges
Similar average build year
Nearest mean year-built outside PA (1965 here).
- Windsor County, VT · avg 1965 · 483 bridges
- Harper County, KS · avg 1965 · 372 bridges
- Caledonia County, VT · avg 1965 · 247 bridges
- Macoupin County, IL · avg 1965 · 242 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (128)
SR 0080 WBL
FairOver: OVER S.R. 1001
2.5 MILE E OF LIGHTSTREET, Columbia, PA
Built 1963 Load: 42.6 t ADT: 15,068
SR 1025
FairOver: OVER HUNTINGTON CREEK
VILLAGE OF JONESTOWN, Columbia, PA
Built 1959 Load: 42.6 t ADT: 985
SR 2001
FairOver: OVER ROARING CREEK
VILLAGE OF MILL GROVE, Columbia, PA
Built 1956 Load: 42.6 t ADT: 267
SR 4020
FairOver: OVER GREEN CREEK
1 MI N OF ORANGEVILLE, Columbia, PA
Built 1961 Load: 43.5 t ADT: 506
SR 4024
FairOver: OVER LITTLE FISHING CR.
VILLAGE OF IOLA, Columbia, PA
Built 1941 Load: 43.5 t ADT: 522
W HEMLOCKRD SR4053
FairOver: I-80 EBL & WBL
4 MI E OF DANVILLE EXIT, Columbia, PA
Built 1963 Load: 45.4 t ADT: 158
S.R. 1015
FairOver: OVER W BR OF BRIAR CREEK
VILLAGE OF FOWLERSVILLE, Columbia, PA
Built 1986 Load: 45.4 t ADT: 945
CREEK RD.
FairOver: OVER ROARING CREEK
VILLAGE OF SLABTOWN, Columbia, PA
Built 1956 Load: 45.4 t ADT: 145
SR 0080
FairOver: OVER S.R. 2028
2 MI E OF MIFFLINVILLE, Columbia, PA
Built 1964 Load: 47.2 t ADT: 14,651
SR 42
FairOver: TRIB TO ROARING CREEK
4 MILES S OF CATAWISA, Columbia, PA
Built 1959 Load: 49.0 t ADT: 3,451
SR 42
FairOver: OVER SR 11
0.5 MI W OF BLOOMSBURG, Columbia, PA
Built 1970 Load: 49.9 t ADT: 12,914
JERSEYTOWN RD
FairOver: SPRUCE RUN
1.5 MILES SW OF MILLVILLE, Columbia, PA
Built 1970 Load: 49.9 t ADT: 2,949
SR 487
FairOver: ABANDONED RAILROAD
LIGHTSTREET, Columbia, PA
Built 1973 Load: 49.9 t ADT: 5,174
SR 4006
FairOver: Hemlock Creek
4 MI.WEST OF BUCKHORN, Columbia, PA
Built 1983 Load: 50.8 t ADT: 1,121
SR 42
FairOver: OVER CATAWISSA CREEK
CATAWISSA BOROUGH, Columbia, PA
Built 1956 Load: 51.7 t ADT: 8,819
SR 42
FairOver: LITTLE FISHING CREEK
3 MILES N OF MILLVILLE, Columbia, PA
Built 1939 Load: 52.6 t ADT: 1,732
SR 4031
FairOver: OVER LITTLE FISHING CR.
1 MI NE OF SERENO, Columbia, PA
Built 1962 Load: 52.6 t ADT: 205
SR 42
FairOver: LICK RUN
1.25 MILES N OF IOLA, Columbia, PA
Built 1987 Load: 58.1 t ADT: 1,732
T302 COUNTY BR# 32
FairOver: SO. BR. ROARING CREEK
6 MI.SW OF NUMIDIA, Columbia, PA
Built 1940 Load: 59.9 t ADT: 120
SR 4028 BR.
FairOver: WEST BRANCH SHINGLE RUN
6 NI N OF IOLA, Columbia, PA
Built 1950 Load: 60.8 t ADT: 81
SR 4033
FairOver: WOLFHOUSE RUN
2.5 MI NE OF SERENO, Columbia, PA
Built 1952 Load: 60.8 t ADT: 91
SR 4033 BR.
FairOver: OVER WOLFHOUSE RUN
2 MI N OF SERENO, Columbia, PA
Built 1952 Load: 60.8 t ADT: 91
SR 4049
FairOver: W. BR. FISHING CREEK
VILLAGE OF ELK GROVE, Columbia, PA
Built 1932 Load: 60.8 t ADT: 242
SR 254
FairOver: OVER GREEN CREEK
VILLAGE OF ROHRSBURG, Columbia, PA
Built 1992 Load: 67.1 t ADT: 2,173
SR 0042
FairOver: OVER I-80
BUCKHORN INTERCHANGE, Columbia, PA
Built 1965 Load: 68.9 t ADT: 7,048
SR 1019
FairOver: TRIB EAST BR BRIAR CRK
2.5 MI NW OF BERWICK, Columbia, PA
Built 1987 Load: 68.9 t ADT: 1,759
WASHINGTONVILLE RD
FairOver: TRIBUTARY TO MUD CREEK
1 MILE SW OF JERSEYTOWN, Columbia, PA
Built 1932 Load: 99.8 t ADT: 1,315
SR 3010
FairOver: MUGSER RUN
3.5 MI W OF NUMIDA, Columbia, PA
Built 1931 Load: 99.8 t ADT: 478
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.