Total bridges
367
Public highway bridges in Centre County
County profile · official public datasets
Centre County, PA
367 public highway bridges tracked in the FHWA National Bridge Inventory: 48% rated Good, 46% Fair, 6% Poor.
- 367
- Public bridges
- 48%
- Good condition
- 6%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Centre County pairs a top-quartile lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- Top 12%
- lowest Poor share in state
- 6%
- Poor-condition share
- 367
- public highway bridges
- 1982
- 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.
Centre County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Centre County ranks #8 of 67 Pennsylvania counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6%). Centre County, Pennsylvania contains 367 public highway bridges. Roughly 48% are rated “Good,” 46% “Fair,” and 6% “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
48%
176 of 367 rated 7-9
Fair condition
46%
169 of 367 rated 5-6
Poor condition
6%
22 of 367 rated 4 or below
In-state Poor-share rank
#8 of 67
Among Pennsylvania counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 367 NBI-tracked bridges by lowest applicable component rating.
Good 48% (176)
Fair 46% (169)
Poor 6% (22)
Centre County's Poor-condition bridges carry 43,581 vehicle crossings a day
That is 2.5% of the county's reported daily bridge traffic on 6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,981 crossings a day against 5,080 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 367 of 367 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
39% of Centre County's bridges have passed the 50-year mark
143 of the 367 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 48% 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 30.9% of the county's Poor-condition bridge traffic
SR 150-PA 150 over LOGAN BRANCH, built 1934, carries 13,482 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 22-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 43,581 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Centre County's bridges were built
367 bridges with a recorded construction year, grouped by decade
- 1900s 2
1900–1909
2 bridges
- 1910s 7
1910–1919
7 bridges
- 1920s 15
1920–1929
15 bridges
- 1930s 28
1930–1939
28 bridges
- 1940s 8
1940–1949
8 bridges
- 1950s 15
1950–1959
15 bridges
- 1960s
1960–1969
46 bridges
- 1970s 27
1970–1979
27 bridges
- 1980s 28
1980–1989
28 bridges
- 1990s 31
1990–1999
31 bridges
- 2000s
2000–2009
100 bridges
- 2010s
2010–2019
48 bridges
- 2020s 12
2020–2029
12 bridges
What this shows Construction peaked in the 2000s, when 100 of the county's bridges still in the inventory were built, which is 27.2% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year is 1982, 12 years newer than the Pennsylvania average of 1970.
How Centre County compares with Pennsylvania's closest counties by inventory size
The 5 Pennsylvania counties nearest Centre County in number of bridges, with their condition splits. Its 6% Poor share is the 1st-lowest of these 6. Its average build year of 1982 against a peer-group mean of 1969 is 13 years newer.
Showing the 5 closest of 66 Pennsylvania counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Lehigh County | 381 | 29.4% | 59.3% | 11.3% | 1966 |
| Butler County | 378 | 29.9% | 55.8% | 14.3% | 1975 |
| Schuylkill County | 368 | 20.4% | 53% | 26.6% | 1961 |
| Centre County (this page) | 367 | 48% | 46% | 6% | 1982 |
| Lackawanna County | 363 | 36.6% | 45.7% | 17.6% | 1972 |
| Northampton County | 356 | 31.2% | 59.6% | 9.3% | 1970 |
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 Centre 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 Centre County, both outside Pennsylvania so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside PA (367 bridges here).
- Allen County, OH · 367 bridges
- Clackamas County, OR · 367 bridges
- Sullivan County, TN · 368 bridges
- Lorain County, OH · 366 bridges
Similar average build year
Nearest mean year-built outside PA (1982 here).
- Oklahoma County, OK · avg 1982 · 1,216 bridges
- Jackson County, MO · avg 1982 · 930 bridges
- Milwaukee County, WI · avg 1982 · 893 bridges
- Champaign County, IL · avg 1982 · 727 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (169)
SR 322-US 322
FairOver: SR 3007
1 MI N STATE COLLEGE, Centre, PA
Built 2001 Load: 57.2 t ADT: 7,389
SR 1003
FairOver: BALD EAGLE CREEK
3 MI E MILESBURG, Centre, PA
Built 1985 Load: 58.1 t ADT: 645
ON TSR 568
FairOver: BALD EAGLE CREEK
JULIAN, Centre, PA
Built 1990 Load: 60.8 t ADT: 652
SR 99-I 99
FairOver: BLUE SPRINGS HOLLOW / RD
2 MI SW PORT MATILDA, Centre, PA
Built 2004 Load: 60.8 t ADT: 6,583
T-407 PANCAKE RD
FairOver: NORTH FORK BEECH CREEK
0.3 MI NE OF WALNUT RD, Centre, PA
Built 2006 Load: 60.8 t ADT: 50
SR 1002
FairOver: MARSH CREEK
ROMOLA, Centre, PA
Built 1985 Load: 61.7 t ADT: 299
T-307 GATESBURG RD
FairOver: HALFMOON CREEK
1.1 MI. WEST OF GATESBURG, Centre, PA
Built 1999 Load: 64.4 t ADT: 250
T-365 TROUT ROAD
FairOver: SPRING CREEK
60 FT SE OF T-376, Centre, PA
Built 1987 Load: 68.0 t ADT: 375
SR 3040
FairOver: ARDERY RUN
MARTHA FURNACE, Centre, PA
Built 1952 Load: 68.9 t ADT: 2,220
SR 504-PA 504
FairOver: DEWITT RUN
UNIONVILLE, Centre, PA
Built 1934 Load: 69.9 t ADT: 238
SR 220-US 220
FairOver: BRANCH BALD EAGLE CREEK
DIX, Centre, PA
Built 1952 Load: 82.6 t ADT: 1,505
SR 26-PA 26
FairOver: THOMPSON RUN
LEMONT, Centre, PA
Built 1959 Load: 84.4 t ADT: 17,219
SR 64-PA 64
FairOver: ROARING RUN
2 MI W LAMAR, Centre, PA
Built 1958 Load: 84.4 t ADT: 5,703
SR 504-PA 504
FairOver: SIX MILE RUN
SIX MILE E. PHILIPSBURG, Centre, PA
Built 1998 Load: 95.3 t ADT: 558
SR 80-I 80
FairOver: ROCK RUN
4 MI W SNOWSHOE, Centre, PA
Built 1966 Load: 99.8 t ADT: 15,444
SR 80-I 80
FairOver: HOLT HOLLOW RUN
2 MI W MILESBURG, Centre, PA
Built 1967 Load: 99.8 t ADT: 7,159
SR 80-I 80
FairOver: HOLT HOLLOW RUN
1 MI NW MILESBURG, Centre, PA
Built 1966 Load: 99.8 t ADT: 11,747
SR 322-US 322
FairOver: SPRING CREEK
BOALSBURG, Centre, PA
Built 1971 Load: 99.8 t ADT: 11,372
T-537 SHUNK RD.
FairOver: SINKING CREEK
0.2 MI SE OF INT SR 2008, Centre, PA
Built 1977 Load: 99.8 t ADT: 30
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.