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.

Total bridges

367

Public highway bridges in Centre County

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

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.

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

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.

Bridge inventory size and condition shares for Centre County and the 5 Pennsylvania counties closest to it in inventory size
County Bridges Poor
Lehigh County 381 11.3%
Butler County 378 14.3%
Schuylkill County 368 26.6%
Centre County (this page) 367 6%
Lackawanna County 363 17.6%
Northampton County 356 9.3%

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).

Similar average build year

Nearest mean year-built outside PA (1982 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 367 Good 176 Fair 169 Poor 22

All bridges (367)

SR 99-I 99

Good

Over: BRICKER ROAD

1 1/4 MI S SR 150 INTERCH, Centre, PA

Built 2001 Load: 49.0 t ADT: 12,501

SR 99-I 99

Good

Over: SR 322WB SR 3007 & RAMPS

STATE COLLEGE, Centre, PA

Built 2002 Load: 49.0 t ADT: 13,665

SR 99-I 99

Good

Over: ACCESS ROAD

2 MI SOUTH PORT MATILDA, Centre, PA

Built 2004 Load: 49.0 t ADT: 6,583

Penns Valley Road

Good

Over: Pine Creek

WOODWARD, Centre, PA

Built 2018 Load: 49.2 t ADT: 2,331

SR 2011

Good

Over: ELK CREEK

MILLHEIM, Centre, PA

Built 1989 Load: 49.9 t ADT: 934

SR 144-PA 144

Good

Over: SINKING CREEK

CENTRE HILL, Centre, PA

Built 1997 Load: 49.9 t ADT: 3,831

SR 322-US 322/RAMP

Good

Over: RAMP W-S

1 MI N STATE COLLEGE, Centre, PA

Built 2001 Load: 49.9 t ADT: 9,795

SR 3011

Good

Over: SPRING CREEK

LEMONT, Centre, PA

Built 2002 Load: 49.9 t ADT: 8,191

SR 3006

Good

Over: BUFFALO RUN

BUFFALO RUN, Centre, PA

Built 2004 Load: 49.9 t ADT: 211

SR 3023

Good

Over: LAUREL RUN

3 MI NW PORT MATILDA, Centre, PA

Built 2009 Load: 49.9 t ADT: 150

SR 3001

Good

Over: SPRING CREEK

3 MI SW BELLEFONTE, Centre, PA

Built 1995 Load: 50.8 t ADT: 677

MAIN PARK ROAD

Good

Over: BIG POE CREEK

POE VALLEY STATE PARK, Centre, PA

Built 1933 Load: 50.8 t ADT: 90

SR 99-I 99

Good

Over: SR 3043

0.5 MI E OF STATE COLLEGE, Centre, PA

Built 2002 Load: 50.8 t ADT: 13,665

SR 99-I 99

Good

Over: LAUREL AND OLIVER RUNS

2 MILES WEST PORT MATILDA, Centre, PA

Built 2003 Load: 50.8 t ADT: 7,082

SR 3042

Good

Over: OLIVER RUN

2 MI NW. PORT MATILDA, Centre, PA

Built 2004 Load: 50.8 t ADT: 934

SR 0045

Good

Over: PENNS CREEK

SPRING MILLS, Centre, PA

Built 2008 Load: 50.8 t ADT: 6,018

T-395 PEACE RD

Good

Over: WALLACE RUN

160 FT WEST OF SR 144, Centre, PA

Built 2013 Load: 50.8 t ADT: 25

SR 99 - I 99

Good

Over: SR 550-PA 550

BELLEFONTE, Centre, PA

Built 1997 Load: 51.7 t ADT: 8,056

SR 99-I 99

Good

Over: PRISON ROAD D

1 MI S SR 150 INTERCHANGE, Centre, PA

Built 2001 Load: 51.7 t ADT: 12,128

SR 99-I 99

Good

Over: PRISON ROAD D

1 MI S SR 150 INTERCHANGE, Centre, PA

Built 2001 Load: 51.7 t ADT: 12,501

Plank Rd ALT 220

Good

Over: Laurel Run

PORT MATILDA, Centre, PA

Built 2018 Load: 51.8 t ADT: 3,400

SR 99 - I 99

Good

Over: T-425

4 MI SE BELLEFONTE, Centre, PA

Built 2000 Load: 52.6 t ADT: 8,805

SR 99-I 99

Good

Over: SR 3043

0.5 MI E OF STATE COLLEGE, Centre, PA

Built 2002 Load: 52.6 t ADT: 13,842

SR 99 I-99

Good

Over: LAUREL AND OLIVER RUNS

2 MILES WEST PORT MATILDA, Centre, PA

Built 2003 Load: 52.6 t ADT: 7,046

SR 99 - I 99

Good

Over: T-425

4 MI SE BELLEFONTE, Centre, PA

Built 1973 Load: 53.5 t ADT: 8,478

SR 144-PA 144

Good

Over: TRIB WALLACE RUN

GUM STUMP, Centre, PA

Built 2019 Load: 54.1 t ADT: 996

SR 3007

Good

Over: SR 3043

0.5 MI E OF STATE COLLEGE, Centre, PA

Built 2002 Load: 54.4 t ADT: 6,629

SR 99-I 99

Good

Over: SR 144/SEDA-COG/NIT& B E

2 MI NW PLEASANT GAP, Centre, PA

Built 2001 Load: 54.4 t ADT: 10,873

SR 99-I 99

Good

Over: SR 144/SEDA-COG/NIT& B E

2 MILES N W PLEASANT GAP, Centre, PA

Built 2001 Load: 54.4 t ADT: 11,450

SR 3041

Good

Over: SR 99 - I 99

2 MI N HOUSERVILLE, Centre, PA

Built 2000 Load: 55.3 t ADT: 10,549

SR 2011

Good

Over: ELK CREEK

COBURN, Centre, PA

Built 1989 Load: 58.1 t ADT: 934

KRISE VALLEY ROAD

Good

Over: POTTER RUN

100 FT WEST OF SR 322, Centre, PA

Built 2009 Load: 58.1 t ADT: 40

ON TSR 863

Good

Over: ELK CREEK

SMULLTON, Centre, PA

Built 1990 Load: 59.0 t ADT: 396

SR 3027

Good

Over: TROUT RUN

OSCEOLA MILLS, Centre, PA

Built 2000 Load: 60.8 t ADT: 201

SR 322-US 322

Good

Over: SR 3005

3 MI N STATE COLLEGE, Centre, PA

Built 2001 Load: 60.8 t ADT: 16,842

SR 3006

Good

Over: SPRING CREEK

BELLEFONTE, Centre, PA

Built 1999 Load: 61.7 t ADT: 1,890

SR 2014

Good

Over: TRIB TO PENNS CREEK

PENN HALL, Centre, PA

Built 2009 Load: 64.4 t ADT: 197

SR 53-PA 53

Good

Over: MOSHANNON CREEK

3 MILE WEST OF MOSHANNON, Centre, PA

Built 2004 Load: 72.6 t ADT: 546

SR 2008

Good

Over: PENNS CREEK

SPRING MILLS, Centre, PA

Built 2003 Load: 81.6 t ADT: 135

SR 322-US 322

Good

Over: ACCESS ROAD #1

3 MI N STATE COLLEGE, Centre, PA

Built 2001 Load: 83.5 t ADT: 32,772

T-943 MARY ELIZ ST

Good

Over: SPRING CREEK

143 FT EAST INT SR 3010, Centre, PA

Built 1974 Load: 96.9 t ADT: 1,800

SR 80-I 80

Good

Over: SOUTH FORK BEECH CREEK

SNOW SHOE, Centre, PA

Built 1966 Load: 99.8 t ADT: 16,141

SR 80-I 80

Good

Over: NITTANY CREEK

1 MI W EXIT 161, Centre, PA

Built 1967 Load: 99.8 t ADT: 11,358

SR 80-I 80

Good

Over: NITTANY CREEK

3 MI E MILESBURG, Centre, PA

Built 1967 Load: 99.8 t ADT: 11,545

SR 322-US 322

Good

Over: NURSERY ACCESS ROAD

NURSERY ACCESS ROAD, Centre, PA

Built 1971 Load: 99.8 t ADT: 15,945

T942 L COLEVLLE RD

Poor

Over: BUFFALO RUN

900 FT SW OF SR 3006, Centre, PA

Built 1965 Load: 0.0 t ADT: 500

T-524 BROWN RD

Poor

Over: ELK CREEK

1900 FT SOUTH OF SR 192, Centre, PA

Built 1940 Load: 10.0 t ADT: 20

T-467 HOY RD

Poor

Over: LITTLE FISHING CREEK

0.8 MI SW OF NITTANY, Centre, PA

Built 1936 Load: 15.4 t ADT: 150

T-519 FIEDLER RD

Poor

Over: PINE CREEK

1.1 MI WEST OF WOODWARD, Centre, PA

Built 1925 Load: 17.2 t ADT: 15

LAKE RD

Poor

Over: SINKING CREEK

2.4 MI S 322, Centre, PA

Built 1940 Load: 17.2 t ADT: 50

Read our methodology - how this data is sourced, computed, and verified.

Related

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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.