County profile · official public datasets

Montour County, PA

108 public highway bridges tracked in the FHWA National Bridge Inventory: 50% rated Good, 44.4% Fair, 5.6% Poor.

108
Public bridges: 50%
Good condition: 5.6%
Poor condition

The verdict

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

Montour County posts a top-10% lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 9%
lowest Poor share in state: 5.6%
Poor-condition share: 108
public highway bridges: 1968
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.

Montour County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Montour County ranks #6 of 67 Pennsylvania counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.6%). Montour County, Pennsylvania contains 108 public highway bridges. Roughly 50% are rated “Good,” 44.4% “Fair,” and 5.6% “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

108

Public highway bridges in Montour County

Good condition

50%

54 of 108 rated 7-9

Fair condition

44.4%

48 of 108 rated 5-6

Poor condition

5.6%

6 of 108 rated 4 or below

In-state Poor-share rank

#6 of 67

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

Condition distribution

Share of 108 NBI-tracked bridges by lowest applicable component rating.

Good

50% (54)

Fair

44.4% (48)

Poor

5.6% (6)

Montour County's Poor-condition bridges carry 6,885 vehicle crossings a day

That is 1.8% of the county's reported daily bridge traffic on 5.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,148 crossings a day against 3,103 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 108 of 108 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

61.1% of Montour County's bridges have passed the 50-year mark

66 of the 108 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 50% 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 66.5% of the county's Poor-condition bridge traffic

SR 54 over OVER MUD CREEK, built 1930, carries 4,581 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 6-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 6,885 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

pre-1900

1
1900s

3
1910s

4
1920s

3
1930s

5
1940s

8
1950s

10
1960s

26
1970s

10
1980s

5
1990s

16
2000s

4
2010s

12
2020s

1

What this shows Construction peaked in the 1960s, when 26 of the county's bridges still in the inventory were built, which is 24.1% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1968) matches the Pennsylvania average (1970).

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

The 5 Pennsylvania counties nearest Montour County in number of bridges, with their condition splits. Its 5.6% Poor share is the 1st-lowest of these 6. Its average build year of 1968 against a peer-group mean of 1969 is in line with the group.

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

Bridge inventory size and condition shares for Montour County and the 5 Pennsylvania counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Wyoming County	140	42.1%	35%	22.9%	1973
Carbon County	134	20.9%	60.4%	18.7%	1960
Elk County	127	39.4%	49.6%	11%	1973
Sullivan County	119	43.7%	47.1%	9.2%	1967
Montour County (this page)	108	50%	44.4%	5.6%	1968
Forest County	71	35.2%	52.1%	12.7%	1974

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

Similar inventory size

Nearest county inventories outside PA (108 bridges here).

Lassen County, CA · 108 bridges
Pulaski County, IL · 108 bridges
West Feliciana County, LA · 108 bridges
Brown County, MN · 108 bridges

Similar average build year

Nearest mean year-built outside PA (1968 here).

San Joaquin County, CA · avg 1968 · 644 bridges
Providence County, RI · avg 1968 · 476 bridges
Imperial County, CA · avg 1968 · 444 bridges
Humboldt County, CA · avg 1968 · 396 bridges

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

All 108 Good 54 Fair 48 Poor 6

All bridges (108)

Sort:

Montour County Bridge Snapshot

Condition distribution

Montour County's Poor-condition bridges carry 6,885 vehicle crossings a day

61.1% of Montour County's bridges have passed the 50-year mark

One structure carries 66.5% of the county's Poor-condition bridge traffic

How Montour County compares with Pennsylvania'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 (108)

MONTOUR STREET

T-318 CTY BR #4

T-347 (CO. BR. #7)

SR 3003

SR 54

SR 1003

T-412 CTY BR # 24

T-390 CO. BR #21

SR 54

I-80 EB

PA 254

SR 45

SR 254

SR 1007

I-80 EBL

SR 54

SR 4008

SR 254

SR 254

SR 1009

SR 4003

SR 4008

SR 4008

T-422 CTY BR # E

T-362 CTY # 18

JACOBS ALLEY

ROONEY AVENUE

SR 44

I-80 EB

I-80 WBL

SR 3006

I-80 WBL

I-80 EBL

SR 4001

SR 642

SR 4003

SR 1009

SR 2007

SR 54

I-80 EBL

I-80 WB

I-80 WB

I-80 WBL

SR 54

SR 642

SR 3009

SR 1003

SR 11

SR 11

SR 3003

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