County profile · official public datasets

York County, ME

236 public highway bridges tracked in the FHWA National Bridge Inventory: 32.6% rated Good, 58.1% Fair, 9.3% Poor.

236
Public bridges: 32.6%
Good condition: 9.3%
Poor condition

The verdict

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

York County pairs a top-10% lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

Top 6%
lowest Poor share in state: 9.3%
Poor-condition share: 236
public highway bridges: 1976
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.

York County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, York County ranks #1 of 16 Maine counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 9.3%). York County, Maine contains 236 public highway bridges. Roughly 32.6% are rated “Good,” 58.1% “Fair,” and 9.3% “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

236

Public highway bridges in York County

Good condition

32.6%

77 of 236 rated 7-9

Fair condition

58.1%

137 of 236 rated 5-6

Poor condition

9.3%

22 of 236 rated 4 or below

In-state Poor-share rank

#1 of 16

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

Condition distribution

Share of 236 NBI-tracked bridges by lowest applicable component rating.

Good

32.6% (77)

Fair

58.1% (137)

Poor

9.3% (22)

York County's Poor-condition bridges carry 67,665 vehicle crossings a day

That is 4.2% of the county's reported daily bridge traffic on 9.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 3,076 crossings a day against 5,814 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 236 of 236 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

45.3% of York County's bridges have passed the 50-year mark

107 of the 236 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 32.6% 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 21.1% of the county's Poor-condition bridge traffic

ALFRED RD over MOUSAM RIVER, built 1958, carries 14,260 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 67,665 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

pre-1900

2
1900s

3
1910s

1
1920s

8
1930s

15
1940s

25
1950s

18
1960s

19
1970s

28
1980s

26
1990s

18
2000s

38
2010s

34
2020s

1

What this shows Construction peaked in the 2000s, when 38 of the county's bridges still in the inventory were built, which is 16.1% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year is 1976, 6 years newer than the Maine average of 1970.

How York County compares with Maine's closest counties by inventory size

The 5 Maine counties nearest York County in number of bridges, with their condition splits. Its 9.3% Poor share is the 1st-lowest of these 6. Its average build year of 1976 against a peer-group mean of 1968 is 8 years newer.

Showing the 5 closest of 15 Maine counties eligible for comparison.

Bridge inventory size and condition shares for York County and the 5 Maine counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Penobscot County	301	20.9%	61.1%	17.9%	1972
Oxford County	252	25%	57.5%	17.5%	1968
York County (this page)	236	32.6%	58.1%	9.3%	1976
Aroostook County	229	17.9%	71.6%	10.5%	1970
Kennebec County	188	19.1%	67.6%	13.3%	1965
Somerset County	173	19.7%	56.6%	23.7%	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 York 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 York County, both outside Maine so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside ME (236 bridges here).

Etowah County, AL · 236 bridges
Cabarrus County, NC · 236 bridges
Catawba County, NC · 236 bridges
Wyandot County, OH · 236 bridges

Similar average build year

Nearest mean year-built outside ME (1976 here).

Marion County, IN · avg 1976 · 958 bridges
Mohave County, AZ · avg 1976 · 641 bridges
Comanche County, OK · avg 1976 · 593 bridges
Prince George's County, MD · avg 1976 · 576 bridges

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

All 236 Good 77 Fair 137 Poor 22

All bridges (236)

Sort:

York County Bridge Snapshot

Condition distribution

York County's Poor-condition bridges carry 67,665 vehicle crossings a day

45.3% of York County's bridges have passed the 50-year mark

One structure carries 21.1% of the county's Poor-condition bridge traffic

How York County compares with Maine's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

All bridges (236)

N.B. RAMP I-95 TO

I-95 SB & NB

OGUNQUIT/BERWICK

I-95 (NB)

WILSON ROAD (ROUTE

I-95(NB)

I-95 (NB)

I-95(SB)

CAPE RD

BEECH RIDGE RD

COLES HILL RD

MILLS RD

FALL RD

ELM ST

RIVER ST

BEACH AV

I-95(NB)

I-95(SB)

I-95(SB)

BACK RD

WASHINGTON ST

I-95 (SB)

LITTLE RIVER RD

ROCHESTER ST

I-95

I 195 EB

I 195 WB

WATERBORO RD

MILL ST

ENTERPRISE RD

NEW COUNTY RD

MADISON ST

OCEAN AVE

CAPTAIN THOMAS RD

PORTLAND RD

SOUTH ST

HUBBARD RD

POST RD

GOVERNMENT ST

CLAY HILL RD

ROUTE 236

MOUSE LN

RAMP H

CARL BROGGI HWY

Saco Spur

MAIN ST

SWETTS BRIDGE RD

BUZZELL RD

BIDDEFORD RD

FEDERAL RD

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