County profile · official public datasets

Adams County, PA

254 public highway bridges tracked in the FHWA National Bridge Inventory: 36.2% rated Good, 57.1% Fair, 6.7% Poor.

254
Public bridges
36.2%
Good condition
6.7%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Adams County posts a top-quartile lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 15%
lowest Poor share in state
6.7%
Poor-condition share
254
public highway bridges
1972
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.

Adams County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Adams County ranks #10 of 67 Pennsylvania counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.7%). Adams County, Pennsylvania contains 254 public highway bridges. Roughly 36.2% are rated “Good,” 57.1% “Fair,” and 6.7% “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

254

Public highway bridges in Adams County

Good condition

36.2%

92 of 254 rated 7-9

Fair condition

57.1%

145 of 254 rated 5-6

Poor condition

6.7%

17 of 254 rated 4 or below

In-state Poor-share rank

#10 of 67

Among Pennsylvania counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 254 NBI-tracked bridges by lowest applicable component rating.

Good
36.2% (92)
Fair
57.1% (145)
Poor
6.7% (17)

Adams County's Poor-condition bridges carry 16,457 vehicle crossings a day

That is 2.2% of the county's reported daily bridge traffic on 6.7% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 968 crossings a day against 3,222 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 254 of 254 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

55.5% of Adams County's bridges have passed the 50-year mark

141 of the 254 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 36.2% 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 27.4% of the county's Poor-condition bridge traffic

PA 34; SR 0034 over CONEWAGO CREEK, built 1920, carries 4,513 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 17-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 16,457 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Adams County's bridges were built

254 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 48 of the county's bridges still in the inventory were built, which is 18.9% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1972) matches the Pennsylvania average (1970).

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

How Adams County compares with Pennsylvania's closest counties by inventory size

The 5 Pennsylvania counties nearest Adams County in number of bridges, with their condition splits. Its 6.7% Poor share is the 1st-lowest of these 6. Its average build year of 1972 against a peer-group mean of 1970 is in line with the group.

Showing the 5 closest of 66 Pennsylvania counties eligible for comparison.

Bridge inventory size and condition shares for Adams County and the 5 Pennsylvania counties closest to it in inventory size
County Bridges Poor
Columbia County 271 10%
Lawrence County 265 11.3%
Armstrong County 263 8%
Wayne County 259 31.3%
Adams County (this page) 254 6.7%
Huntingdon County 238 10.9%

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 Adams 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 Adams County, both outside Pennsylvania so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside PA (254 bridges here).

Similar average build year

Nearest mean year-built outside PA (1972 here).

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

All 254 Good 92 Fair 145 Poor 17

All bridges (254)

PA97 : SR 0097

Good

Over: WHITE RUN

S.E.OF GETTYSBURG, Adams, PA

Built 2003 Load: 42.6 t ADT: 9,061

Emmitsburg Rd

Good

Over: Middle Creek

.5 mi N of MD, Adams, PA

Built 2010 Load: 42.6 t ADT: 1,225

FAIRFIELD ROAD

Good

Over: MUDDY RUN

1 MI NE OF FAIRFIELD, Adams, PA

Built 2016 Load: 42.8 t ADT: 3,987

KNOXLYN RD

Good

Over: LITTLE MARSH CREEK

KNOXLYN, Adams, PA

Built 2017 Load: 42.8 t ADT: 604

PA 116; SR 0116

Good

Over: SILVER BROOK CREEK

1.0 MI EAST OF GETTYSBURG, Adams, PA

Built 1970 Load: 43.5 t ADT: 7,355

PA 116; SR 0116

Good

Over: TOMS CREEK

2 MILES S. OF FAIRFIELD, Adams, PA

Built 2006 Load: 43.5 t ADT: 4,076

T-348 (Belmont Rd)

Good

Over: CSX Transportation

3 mi NW of Gettysburg, Adams, PA

Built 2012 Load: 43.7 t ADT: 600

BALTIMORE PIKE

Good

Over: ALLOWAY CREEK

1 MI NW OF LITTLESTOWN, Adams, PA

Built 2018 Load: 44.4 t ADT: 8,082

STORMS STORE ROAD

Good

Over: CONEWAGO CREEK

2.25 MI.SW OF NEW OXFORD, Adams, PA

Built 1820 Load: 44.5 t ADT: 650

East Berlin Rd

Good

Over: Beaver Creek

East Berlin Boro, Adams, PA

Built 2010 Load: 44.5 t ADT: 8,108

COLEMAN RD

Good

Over: CSX RAILROAD

2 MI SE OF HUNTERSTOWN, Adams, PA

Built 2019 Load: 45.0 t ADT: 1,400

US 15 NB; SR 0015

Good

Over: MARSH CREEK

2 MI N OF MARYLAND LINE, Adams, PA

Built 1990 Load: 45.4 t ADT: 9,529

SR 3006; BARLOW RD

Good

Over: US 15 NB; SR 0015

SOUTH OF GETTYSBURG, Adams, PA

Built 1990 Load: 45.4 t ADT: 587

KOHLER MILL ROAD

Good

Over: TRIB.CONEWAGO CREEK

.5SW N.OXF/TRIB CONEWAGO, Adams, PA

Built 1996 Load: 45.4 t ADT: 400

E Upper Bermudian

Good

Over: BERMUDIAN CREEK

1 MI EAST OF GARDNERS, Adams, PA

Built 2018 Load: 45.4 t ADT: 187

T-417; SACHS RD

Good

Over: US 15 NB; SR 0015

SOUTH OF GETTYSBURG, Adams, PA

Built 1990 Load: 46.3 t ADT: 138

PA 234; SR 0234

Good

Over: CONEWAGO CREEK

EAST BERLIN BORO, Adams, PA

Built 1993 Load: 46.3 t ADT: 8,022

SR 2006

Good

Over: INDIAN RUN

3/4 MI.S. OF MT.PLEASANT, Adams, PA

Built 1983 Load: 46.3 t ADT: 4,688

SR 3005

Good

Over: PLUM RUN

2 MI. NW GREENMOUNT, Adams, PA

Built 1998 Load: 46.3 t ADT: 619

Heidlersburg Rd

Good

Over: Opossum Creek

2 MI NE OF BIGLERVILLE, Adams, PA

Built 2017 Load: 46.7 t ADT: 5,214

Carlisle Road

Good

Over: OPOSSUM CREEK

4 MI N OF BIGLERVILLE, Adams, PA

Built 2018 Load: 47.0 t ADT: 2,990

US 15 NB; SR 0015

Good

Over: MIDDLE CREEK

1.25M N. MARYLAND LINE, Adams, PA

Built 1990 Load: 47.2 t ADT: 8,415

SR 0097

Good

Over: LITTLE RUN

South East of Gettysburg, Adams, PA

Built 2007 Load: 47.2 t ADT: 7,298

SR 1014

Good

Over: TRIB BERMUDIAN CREEK

2 MI.S.W. OF YORK SPRINGS, Adams, PA

Built 1985 Load: 48.1 t ADT: 505

PA 394;SR 0394

Good

Over: BEAVER DAM CREEK

HUNTERSTOWN, Adams, PA

Built 2004 Load: 49.0 t ADT: 3,688

Old HBG Rd 3001

Good

Over: Trib Rock Cr

NE of Gettysburg, Adams, PA

Built 2010 Load: 49.0 t ADT: 3,874

WILLOW ROAD

Good

Over: WHITE RUN

WILLOW ROAD BRIDGE, Adams, PA

Built 1993 Load: 49.0 t ADT: 100

sr.4008

Good

Over: opossum creek

1.5 MILES W. BENDERSVILLE, Adams, PA

Built 2005 Load: 49.9 t ADT: 1,360

TOWNHILL ROAD

Good

Over: TRIB.TO LATIMORE CREEK

2 N YRKSPRG/TR.LATIMRE CR, Adams, PA

Built 1977 Load: 51.7 t ADT: 250

GOLF COURSE RD

Good

Over: CARBAUGH RUN

0.1 MI SOUTH OF US 30, Adams, PA

Built 2018 Load: 52.5 t ADT: 142

PA 92; SR 0092

Good

Over: MUD RUN

3 MI. S.E. OF YORK SPRING, Adams, PA

Built 2001 Load: 53.5 t ADT: 7,928

1004/ Goodyear Rd

Good

Over: Trib Latimore Creek

2.5 Mi west of Latimore, Adams, PA

Built 2010 Load: 53.5 t ADT: 340

US 15; SR 0015

Good

Over: PA 94; SR 0094

E OF YORK SPRINGS, Adams, PA

Built 1957 Load: 58.1 t ADT: 17,119

SR 1017

Good

Over: BEAVERDAM CREEK

1.5 MI N OF HUNTERSTOWN, Adams, PA

Built 1926 Load: 63.5 t ADT: 306

SR 3018

Good

Over: LITTLE MARSH CREEK

W. OF ORRTANNA, Adams, PA

Built 1941 Load: 66.2 t ADT: 266

SR 3013

Good

Over: MARSH RUN

1 MI N OF KNOXLYN, Adams, PA

Built 1947 Load: 70.8 t ADT: 604

SR0194/Abbottstown

Good

Over: Spring Run

1 mile S. of Abbottstwown, Adams, PA

Built 2009 Load: 72.6 t ADT: 9,957

SR 1017

Poor

Over: CONEWAGO CREEK

2.75 MI.N. OF HUNTERSTOWN, Adams, PA

Built 1963 Load: 4.5 t ADT: 306

RIDGE ROAD

Poor

Over: LATIMORE CREEK

2.5 E.YRK.SPRG/LATIMORE C, Adams, PA

Built 1945 Load: 8.2 t ADT: 150

FEESER ROAD

Poor

Over: ALLOWAY CREEK

2 NW LITLTWN/ALLOWAY CRK., Adams, PA

Built 1940 Load: 9.1 t ADT: 100

STONEY POINT ROAD

Poor

Over: MARKEL RUN

1.5 NE HAMPTON;MARKET RUN, Adams, PA

Built 1940 Load: 16.3 t ADT: 500

PA 394; SR 0394

Poor

Over: CONEWAGO CREEK

.75 MI. NE OF NEW CHESTER, Adams, PA

Built 1935 Load: 20.0 t ADT: 1,197

SR 3002

Poor

Over: ROCK CREEK

2 1/4 MI.S. OF BARLOW, Adams, PA

Built 1940 Load: 20.0 t ADT: 612

GOULDEN ROAD

Poor

Over: ROCK CREEK

1.5 SE ROUND TOP/ROCK CRE, Adams, PA

Built 1936 Load: 20.9 t ADT: 125

SALEM CHURCH ROAD

Poor

Over: TRIB.OF SWIFT RUN

1 S.GULDENS TR.SWIFT RUN, Adams, PA

Built 1920 Load: 21.8 t ADT: 50

PA 116; SR 0116

Poor

Over: TRIB TO MARSH CREEK

SW OF GETTYSBURG, Adams, PA

Built 1920 Load: 29.0 t ADT: 3,987

SR 4008

Poor

Over: CONEWAGO CREEK

1 MI N OF ARENDTSVILLE, Adams, PA

Built 1957 Load: 29.0 t ADT: 992

JACOBS MILL ROAD

Poor

Over: BEAVER CREEK

1 SE BERLIN/BEAVER CREEK, Adams, PA

Built 1954 Load: 31.8 t ADT: 75

PA 34; SR 0034

Poor

Over: CONEWAGO CREEK

1 MI. S. OF BIGLERVILLE, Adams, PA

Built 1920 Load: 32.7 t ADT: 4,513

SR 3005

Poor

Over: TRIB MARSH CREEK

S.W. OF GETTYSBURG, Adams, PA

Built 1960 Load: 32.7 t ADT: 569

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.