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)

SR 3001;OLD HBG RD

Fair

Over: TRIB CONEWAGO CREEK

S. OF HEIDERSBURG, Adams, PA

Built 1985 Load: 39.0 t ADT: 1,473

SR 4014 (TWP. RD.)

Fair

Over: CONEWAGO CREEK

BEECHERSVILLE, Adams, PA

Built 1962 Load: 39.0 t ADT: 468

FLOHRS CHURCH RD

Fair

Over: MARSH CREEK

1.5 NE CSHTWN./MARSH CRK., Adams, PA

Built 1978 Load: 39.0 t ADT: 75

PA 97; SR 0097

Fair

Over: US 15; SR 0015

2.5 MI S.E. OF GETTYSBURG, Adams, PA

Built 2000 Load: 39.0 t ADT: 9,062

PA 94; SR 0094

Fair

Over: CONEWAGO CREEK

1.25 MI SE OF HAMPTON, Adams, PA

Built 1989 Load: 39.9 t ADT: 9,723

GREEN RIDGE ROAD

Fair

Over: CONEWAGO CREEK

1 E.HMPTN RDG/HMLTN CONWG, Adams, PA

Built 1957 Load: 39.9 t ADT: 110

US 15 NB; SR 0015

Fair

Over: CSX

2 MI. N. OF GETTYSBURG, Adams, PA

Built 1990 Load: 40.8 t ADT: 8,630

SR 3001

Fair

Over: US 15; SR 0015

1.75 MILES N OF MARYLAND, Adams, PA

Built 1963 Load: 41.7 t ADT: 2,717

RAMPIKE HILL ROAD

Fair

Over: OPOSSUM CREEK

.8 NE BENDERS/OPOSSUM CRK, Adams, PA

Built 1972 Load: 41.7 t ADT: 300

DISTRICT ROAD

Fair

Over: CARBAUGH RUN

1.2 MI NW OF NEWMAN RD, Adams, PA

Built 2007 Load: 41.7 t ADT: 25

US 30; SR 0030

Fair

Over: SOUTH BR OF CONEWAGO CK

W OF NEW OXFORD, Adams, PA

Built 1929 Load: 42.6 t ADT: 13,138

SR 1007

Fair

Over: BERMUDIAN CREEK

1 MI S OF BERMUDIAN, Adams, PA

Built 1947 Load: 42.6 t ADT: 862

SR 3009

Fair

Over: MINEY BR. OF TOMS CREEK

FOUNTAINDALE, Adams, PA

Built 1956 Load: 42.6 t ADT: 744

SWIFT RUN ROAD

Fair

Over: SWIFT RUN

2.5 NW NEW OXFORD/SWIFT R, Adams, PA

Built 1974 Load: 42.6 t ADT: 400

BEAVER RUN ROAD

Fair

Over: BEAVERDAM CREEK

1.5 M W N CHESTER/BURDAM, Adams, PA

Built 1963 Load: 42.6 t ADT: 75

US 30; SR 0030

Fair

Over: SETTLES RUN

NW OF GETTYSBURG, Adams, PA

Built 1990 Load: 43.5 t ADT: 6,752

PA 194; SR 0194

Fair

Over: TRIB TO CONEWAGO

E OF LITTLESTOWN, Adams, PA

Built 1954 Load: 43.5 t ADT: 10,044

SR 1005

Fair

Over: LATIMORE CREEK

W.OF DEARDORFFS MILL, Adams, PA

Built 1922 Load: 43.5 t ADT: 427

BUSHEY SCHOOL RD

Fair

Over: LATIMORE CREEK

1.0 MI E. OF LATIMORE, Adams, PA

Built 1999 Load: 43.5 t ADT: 50

SR 3006

Fair

Over: TRIB MARSH CREEK

1 MI.E. OF GREENMOUNT, Adams, PA

Built 1986 Load: 45.4 t ADT: 587

OLD MILL RD; T-546

Fair

Over: PINE RUN

1.5 NE ABBOTTSTN/PINE RUN, Adams, PA

Built 1993 Load: 45.4 t ADT: 75

US 15; SR 0015

Fair

Over: PLUM RUN

S OF GETTYSBURG, Adams, PA

Built 1963 Load: 46.3 t ADT: 19,046

US 15; SR 0015

Fair

Over: BRANCH ROCK CREEK

NE OF GETTYSBURG, Adams, PA

Built 1963 Load: 46.3 t ADT: 17,119

PA 16; SR 0016

Fair

Over: MINEY BRANCH

2 MI. E. OF FOUNTAINDALE, Adams, PA

Built 1952 Load: 46.3 t ADT: 6,506

PA 116; SR 0116

Fair

Over: TRIB TO CONEWAGO CREEK

.5 MI. W. OF BRUSHTOWN, Adams, PA

Built 1949 Load: 46.3 t ADT: 8,552

US 30; SR 0030

Fair

Over: MARSH CREEK

SEVEN STARS, Adams, PA

Built 1990 Load: 47.2 t ADT: 6,752

PA 116; FAIRFIELD

Fair

Over: MARSH CREEK

SW OF GETTYSBURG, Adams, PA

Built 1947 Load: 47.2 t ADT: 9,265

PA134;Taneytown Rd

Fair

Over: Rock Creek

Barlow, Adams, PA

Built 1989 Load: 47.2 t ADT: 2,549

OXFORD ROAD

Fair

Over: BERMUDIAN CREEK

2 N HEIDLERSBURG/BERMUDIA, Adams, PA

Built 1963 Load: 47.2 t ADT: 375

Gum Springs Road

Fair

Over: Toms Creek

3.6 miles SW of Fairfield, Adams, PA

Built 1900 Load: 47.2 t ADT: 100

East Water St.

Fair

Over: Stevens Run

Gettysburg Borough, Adams, PA

Built 2016 Load: 47.2 t ADT: 1,000

US 15; SR 0015

Fair

Over: LATIMORE CREEK

N OF YORK SPRINGS, Adams, PA

Built 1963 Load: 48.1 t ADT: 21,392

RED ROCK RD T-327

Fair

Over: MARSH CREEK

3.5 MI.SW OF GETTYSBURG, Adams, PA

Built 1935 Load: 48.1 t ADT: 150

PA 116; SR 0116

Fair

Over: MINEY RUN

4 MI.S.OF FAIRFIELD, Adams, PA

Built 1986 Load: 49.0 t ADT: 4,076

BATEMAN ROAD

Fair

Over: BERMUDIAN CREEK

.6 N SGL#249/BURMUDIAN CR, Adams, PA

Built 1955 Load: 49.0 t ADT: 75

BROUGH ROAD

Fair

Over: LATIMORE CREEK

2.6 N YRKSPRG/LATIMORE CR, Adams, PA

Built 1975 Load: 49.9 t ADT: 50

BENDER CHURCH RD

Fair

Over: OPOSSUM CREEK

2.5 E BIGLERV/OPOSSUM CR, Adams, PA

Built 1956 Load: 50.8 t ADT: 100

BEAVER RUN ROAD

Fair

Over: BEAVERDAM CREEK

1.5 NE.HUNTERSTWN/BURDAM, Adams, PA

Built 1967 Load: 50.8 t ADT: 75

SR 1018

Fair

Over: CONEWAGO CREEK

NW OF ABBOTTSTOWN, Adams, PA

Built 1962 Load: 54.4 t ADT: 1,153

SR 3002

Fair

Over: MARSH CREEK

1/2 MI.N. OF MD. LINE, Adams, PA

Built 1949 Load: 56.2 t ADT: 358

FLESHMAN MILL RD

Fair

Over: CONEWAGO CREEK S.BRANCH

1 SW N OXFD/S BR.CONEWAGO, Adams, PA

Built 1961 Load: 56.2 t ADT: 300

SR 4008

Fair

Over: OPOSSUM CREEK

2 MI.N.W. OF BENDERSVILLE, Adams, PA

Built 1940 Load: 59.0 t ADT: 525

PA16; SR0016

Fair

Over: TOMS CREEK

4 MI S OF FAIRFIELD, Adams, PA

Built 1954 Load: 67.1 t ADT: 9,289

US 30; SR 0030

Fair

Over: SWIFT RUN

2 1/2 MI.W. OF NEW OXFORD, Adams, PA

Built 1929 Load: 99.8 t ADT: 11,922

REYNOLDS AVENUE

Fair

Over: WESTERN MARYLAND RAILROA

0.1 MILES NORTH OF U.S. R, Adams, PA

Built 1958 Load: 99.9 t ADT: 1,448

Shorb Mill Road

Good

Over: Middle Creek

2.5 SW GREENMT.MIDDLE CRK, Adams, PA

Built 1905 Load: 16.3 t ADT: 25

BOYLE RD; T-313

Good

Over: US 15; SR 0015 BMS3

N OF MARYLAND LINE, Adams, PA

Built 1963 Load: 28.1 t ADT: 1,141

WOODS ROAD

Good

Over: PINE RUN

1 NE ABBOTTSTOWN/PINE RUN, Adams, PA

Built 1986 Load: 31.8 t ADT: 150

VISITOR CENTER ROA

Good

Over: GUINN RUN

0.4 MILES EAST OF TANEYTO, Adams, PA

Built 2008 Load: 32.7 t ADT: 100

BUS PARKING ACCESS

Good

Over: WETLANDS

0.6 MILES EAST OF TANEYTO, Adams, PA

Built 2008 Load: 32.7 t ADT: 100

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.