County profile · official public datasets

Delaware County, PA

387 public highway bridges tracked in the FHWA National Bridge Inventory: 24.5% rated Good, 63.6% Fair, 11.9% Poor.

387
Public bridges
24.5%
Good condition
11.9%
Poor condition

The verdict

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

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

34th
of 67 on Poor share
11.9%
Poor-condition share
387
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.

Delaware County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Delaware County ranks #34 of 67 Pennsylvania counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 11.9%). Delaware County, Pennsylvania contains 387 public highway bridges. Roughly 24.5% are rated “Good,” 63.6% “Fair,” and 11.9% “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

387

Public highway bridges in Delaware County

Good condition

24.5%

95 of 387 rated 7-9

Fair condition

63.6%

246 of 387 rated 5-6

Poor condition

11.9%

46 of 387 rated 4 or below

In-state Poor-share rank

#34 of 67

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

Condition distribution

Share of 387 NBI-tracked bridges by lowest applicable component rating.

Good
24.5% (95)
Fair
63.6% (246)
Poor
11.9% (46)

Delaware County's Poor-condition bridges carry 542,409 vehicle crossings a day

That is 7.4% of the county's reported daily bridge traffic on 11.7% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 12,054 crossings a day against 16,924 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 386 of 387 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

52.5% of Delaware County's bridges have passed the 50-year mark

203 of the 387 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 24.5% 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 9.5% of the county's Poor-condition bridge traffic

INTERSTATE 95 (NB) over NAAMANS CREEK ROAD, built 1967, carries 51,626 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 46-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 542,409 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Delaware County's bridges were built

387 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 74 of the county's bridges still in the inventory were built, which is 19.1% 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).

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

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

The 5 Pennsylvania counties nearest Delaware County in number of bridges, with their condition splits. Its 11.9% Poor share is the 3rd-lowest of these 6. Its average build year of 1968 against a peer-group mean of 1968 is in line with the group.

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

Bridge inventory size and condition shares for Delaware County and the 5 Pennsylvania counties closest to it in inventory size
County Bridges Poor
Bradford County 399 10%
Crawford County 399 17.5%
Delaware County (this page) 387 11.9%
Lehigh County 381 11.3%
Butler County 378 14.3%
Schuylkill County 368 26.6%

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

Similar inventory size

Nearest county inventories outside PA (387 bridges here).

Similar average build year

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

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

All 387 Good 95 Fair 246 Poor 46

All bridges (387)

MANCHESTER AVENUE

Poor

Over: SEPTA

.7MI.S.BALT. PK. 34C07, Delaware, PA

Built 1895 Load: 20.9 t ADT: 4,576

CRUM LYNNE ROAD

Poor

Over: CSX TRANSPORTATION

0.4 Mi NW US-13 ADC 28-A5, Delaware, PA

Built 1947 Load: 21.8 t ADT: 1,437

CONESTOGA ROAD

Poor

Over: ITHAN CREEK

WEST SPROUL ROAD 14G11, Delaware, PA

Built 1930 Load: 22.7 t ADT: 9,423

MARSHALL ROAD

Poor

Over: COBBS CREEK

PHILADELPHIA CITY 27D11, Delaware, PA

Built 1964 Load: 22.7 t ADT: 26,260

PAPER MILL ROAD

Poor

Over: WHISKEY RUN

0.1M N SR2016 ADC 3697-C4, Delaware, PA

Built 1965 Load: 22.7 t ADT: 200

MEETING HOUSE ROAD

Poor

Over: BRANCH NAAMANS CREEK

.5MI.EAST TR-491 42D09, Delaware, PA

Built 1916 Load: 23.6 t ADT: 8,178

HILLDALE ROAD

Poor

Over: DARBY CREEK

HILLDALE ADC 22-A4, Delaware, PA

Built 1928 Load: 23.6 t ADT: 1,554

SIXTH ST

Poor

Over: CHESTER CREEK

W OF SPROUL ST 3807-B5, Delaware, PA

Built 1963 Load: 23.6 t ADT: 1,000

CHICHESTER AVENUE

Poor

Over: INTERSTATE 95

1.1MI.N.DELAWARE 42F08, Delaware, PA

Built 1967 Load: 24.5 t ADT: 17,242

GLEN RIDDLE ROAD

Poor

Over: CHROME RUN CREEK

1MI.WEST PA 352 33H09, Delaware, PA

Built 1930 Load: 24.5 t ADT: 4,050

STATE ROAD

Poor

Over: DARBY CREEK

EAST TOWNSHIP LINE 26B13, Delaware, PA

Built 1950 Load: 25.4 t ADT: 29,754

WANAMAKER AVENUE

Poor

Over: DARBY CREEK

.4MILES NORTH I-95 35E13, Delaware, PA

Built 1930 Load: 25.4 t ADT: 20,881

CONCORD ROAD

Poor

Over: CHESTER CREEK / 3694-J10

.7MI.S.CONCORDVI. 32E12, Delaware, PA

Built 1898 Load: 25.4 t ADT: 8,391

CHESTER PIKE

Poor

Over: CRUM CREEK

CRUM CREEK 43K02, Delaware, PA

Built 1926 Load: 26.3 t ADT: 16,625

WANAMAKER AVENUE

Poor

Over: I-95 AND RAMPS

OVER I-95;TINICUM 44F01, Delaware, PA

Built 1975 Load: 26.3 t ADT: 41,530

PROVIDENCE ROAD

Poor

Over: DARBY CREEK

UPPER DARBY LINE 35K03, Delaware, PA

Built 1923 Load: 27.2 t ADT: 12,121

WEST 9TH STREET

Poor

Over: MARCUS HOOK CREEK

W.TRAINER BOROUGH 42K08, Delaware, PA

Built 1941 Load: 27.2 t ADT: 6,143

ENGLE STREET

Poor

Over: INTERSTATE 95;BETHEL RD.

CHESTER TOWNSHIP 43B06, Delaware, PA

Built 1968 Load: 27.2 t ADT: 5,774

INTERSTATE 95 (NB)

Poor

Over: NAAMANS CREEK ROAD

.2MI.N.DELAWARE 42D10, Delaware, PA

Built 1967 Load: 28.1 t ADT: 51,626

VICTORY AVENUE

Poor

Over: SEPTA (P&W) ROUTE 100

NORTH OF PENNA-3 27B10, Delaware, PA

Built 1931 Load: 28.1 t ADT: 12,793

CHICHESTER AVENUE

Poor

Over: CSX RAILROAD

1MI N. I-95 42E08, Delaware, PA

Built 1941 Load: 28.1 t ADT: 15,351

MEETINGHOUSE ROAD

Poor

Over: MARCUS HOOK CREEK/3806A7

UPPER CHICHESTER 42F07, Delaware, PA

Built 1928 Load: 28.1 t ADT: 8,271

GLEN MILLS ROAD

Poor

Over: CHESTER CREEK

GRADYVILLE ROAD 32H05, Delaware, PA

Built 1933 Load: 28.1 t ADT: 3,875

VICTORY AVENUE

Poor

Over: COBBS CREEK

NORTH OF PENNA 3 27B10, Delaware, PA

Built 1937 Load: 29.0 t ADT: 12,793

E. LANCASTER AVE

Poor

Over: BRANCH BROWNS RUN

W.I-476 INTERCHANG 14G09, Delaware, PA

Built 1960 Load: 30.8 t ADT: 29,090

HIBBS AVENUE

Poor

Over: MUCKINIPATTIS CREEK

.8 Mi. N US-13 3698-C6, Delaware, PA

Built 1950 Load: 30.8 t ADT: 140

CONCHESTER HIGHWAY

Poor

Over: CSX RAILROAD

1MILE WEST OF I-95 42J06, Delaware, PA

Built 1949 Load: 32.7 t ADT: 29,211

BEECHWOOD DRIVE

Poor

Over: COBBS CREEK

At Karakung Dr 3588-D3, Delaware, PA

Built 1907 Load: 32.7 t ADT: 1,200

W COLONIAL DR

Poor

Over: SPRING RUN

S OF GARNET MINE RD, Delaware, PA

Built 1975 Load: 32.7 t ADT: 400

CHESTER PIKE

Poor

Over: DARBY CREEK

.1MI.E.OF US-13 36B05, Delaware, PA

Built 1931 Load: 33.6 t ADT: 13,380

BETHEL ROAD

Poor

Over: BRANCH MARCUS HOOK CREEK

BETHEL ROAD 42F05, Delaware, PA

Built 1926 Load: 34.5 t ADT: 2,968

GILMORE ROAD

Poor

Over: NAYLORS RUN

100 S. of PA-3 3588-B5, Delaware, PA

Built 1946 Load: 34.5 t ADT: 490

MEDIA BY-PASS

Poor

Over: RIDLEY CK.RD;RIDLEY CK.

1.5MI.S.PA 252 33K04, Delaware, PA

Built 1959 Load: 35.4 t ADT: 34,005

MIDDLETOWN ROAD

Poor

Over: BALTIMORE PIKE

GRANITE RUN MALL 33H06, Delaware, PA

Built 1935 Load: 39.9 t ADT: 17,613

TOWNSHIP LINE ROAD

Poor

Over: COBBS CREEK

DEL.-PHILA.LINE 26J08, Delaware, PA

Built 1934 Load: 44.5 t ADT: 31,649

PROVIDENCE ROAD

Poor

Over: SEPTA (WEST CHESTER R3)

2MI.NORTH PA.320 34E08, Delaware, PA

Built 1928 Load: 46.3 t ADT: 8,058

SPROUL ROAD

Poor

Over: US-1 BYPASS

SPRINGFIELD TWP 3587D10, Delaware, PA

Built 1977 Load: 62.6 t ADT: 23,771

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.