County profile · official public datasets

Lebanon County, PA

228 public highway bridges tracked in the FHWA National Bridge Inventory: 28.9% rated Good, 62.3% Fair, 8.8% Poor.

228
Public bridges: 28.9%
Good condition: 8.8%
Poor condition

The verdict

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

Lebanon County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 27%
lowest Poor share in state: 8.8%
Poor-condition share: 228
public highway bridges: 1971
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.

Lebanon County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Lebanon County ranks #18 of 67 Pennsylvania counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8.8%). Lebanon County, Pennsylvania contains 228 public highway bridges. Roughly 28.9% are rated “Good,” 62.3% “Fair,” and 8.8% “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

228

Public highway bridges in Lebanon County

Good condition

28.9%

66 of 228 rated 7-9

Fair condition

62.3%

142 of 228 rated 5-6

Poor condition

8.8%

20 of 228 rated 4 or below

In-state Poor-share rank

#18 of 67

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

Condition distribution

Share of 228 NBI-tracked bridges by lowest applicable component rating.

Good

28.9% (66)

Fair

62.3% (142)

Poor

8.8% (20)

Lebanon County's Poor-condition bridges carry 34,107 vehicle crossings a day

That is 2.9% of the county's reported daily bridge traffic on 8.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,705 crossings a day against 4,368 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 228 of 228 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

59.2% of Lebanon County's bridges have passed the 50-year mark

135 of the 228 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 28.9% 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 26.7% of the county's Poor-condition bridge traffic

PA 343;S.PINE GRV. over ELIZABETH RUN, built 1968, carries 9,090 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 20-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 34,107 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

4
1920s

13
1930s

27
1940s

21
1950s

7
1960s

52
1970s

14
1980s

28
1990s

6
2000s

16
2010s

30
2020s

10

What this shows Construction peaked in the 1960s, when 52 of the county's bridges still in the inventory were built, which is 22.8% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1971) matches the Pennsylvania average (1970).

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

The 5 Pennsylvania counties nearest Lebanon County in number of bridges, with their condition splits. Its 8.8% Poor share is the 2nd-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1975 is in line with the group.

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

Bridge inventory size and condition shares for Lebanon County and the 5 Pennsylvania counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Huntingdon County	238	41.6%	47.5%	10.9%	1966
Lebanon County (this page)	228	28.9%	62.3%	8.8%	1971
McKean County	226	43.8%	37.6%	18.6%	1979
Warren County	217	36.4%	45.2%	18.4%	1974
Clinton County	212	42.9%	54.7%	2.4%	1978
Potter County	207	44.9%	42%	13%	1979

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

Similar inventory size

Nearest county inventories outside PA (228 bridges here).

Jackson County, IL · 228 bridges
Franklin County, IA · 228 bridges
Attala County, MS · 228 bridges
Saratoga County, NY · 228 bridges

Similar average build year

Nearest mean year-built outside PA (1971 here).

Wayne County, MI · avg 1971 · 1,026 bridges
Baltimore County, MD · avg 1971 · 783 bridges
Linn County, OR · avg 1971 · 566 bridges
Monmouth County, NJ · avg 1971 · 505 bridges

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

All 228 Good 66 Fair 142 Poor 20

Good-condition bridges (66)

Sort:

Lebanon County Bridge Snapshot

Condition distribution

Lebanon County's Poor-condition bridges carry 34,107 vehicle crossings a day

59.2% of Lebanon County's bridges have passed the 50-year mark

One structure carries 26.7% of the county's Poor-condition bridge traffic

How Lebanon 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

Good-condition bridges (66)

SR 1022

SR 4007

Mount Zion Road

SR 2015

PA TPK (I-76)

T-617

T-505

T-500

T-376 Clear Spr Rd

Greble Road

T-536 (OBIE ROAD)

PA 341; Colebrook

US 422; Cumb. st.

T-615 (Ridge Road)

PA TPK (I-76)

PA 72; SR 0072

SR 2009 S. Market

PA 443; CLEMENT AV

US 422; Lincoln Av

UNION RD.

US 422; Lincoln Av

TWP RD;OLD SR 4023

SR 4020 FISHER AVE

PA 443;MOONSHINE R

SHIRKSVILLE ROAD

SR 4014

SR 2002 Rocherty r

SR 4013

Iron Bridge Road

US 22; SR 0022

PA 934; SR 0934

9TH ST

1003;Lancaster St.

SR 3023

South Spruce St.

RT 72; N 9TH ST

SR 3023

SR 4010(Syner Rd)

10TH ST

PA 443; MOONSHINE

Chestnut Street

Gold Mine Road

SR1014 Greble RD

US 22; A-TOWN BLVD

CHESTNUT STREET

SOUTH 12TH STREET

SR 0081

T-336 Coon CreekRd

WALNUT STREET

US 22; SR 0022

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