County profile · official public datasets

Baltimore city County, MD

374 public highway bridges tracked in the FHWA National Bridge Inventory: 16% rated Good, 75.4% Fair, 8.6% Poor.

374
Public bridges
16%
Good condition
8.6%
Poor condition

The verdict

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

Baltimore city County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

21st
of 24 on Poor share
8.6%
Poor-condition share
374
public highway bridges
1964
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.

Baltimore city County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Baltimore city County ranks #21 of 24 Maryland counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8.6%). Baltimore city County, Maryland contains 374 public highway bridges. Roughly 16% are rated “Good,” 75.4% “Fair,” and 8.6% “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

374

Public highway bridges in Baltimore city County

Good condition

16%

60 of 374 rated 7-9

Fair condition

75.4%

282 of 374 rated 5-6

Poor condition

8.6%

32 of 374 rated 4 or below

In-state Poor-share rank

#21 of 24

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

Condition distribution

Share of 374 NBI-tracked bridges by lowest applicable component rating.

Good
16% (60)
Fair
75.4% (282)
Poor
8.6% (32)

Baltimore city County's Poor-condition bridges carry 696,357 vehicle crossings a day

That is 6.8% of the county's reported daily bridge traffic on 8.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 21,761 crossings a day against 24,974 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 374 of 374 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

56.4% of Baltimore city County's bridges have passed the 50-year mark

211 of the 374 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 16% 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 10.7% of the county's Poor-condition bridge traffic

PERRING PKWY RAMP over HERRING RUN, built 1965, carries 74,402 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 32-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 696,357 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Baltimore city County's bridges were built

374 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1970s, when 107 of the county's bridges still in the inventory were built, which is 28.6% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year is 1964, 8 years older than the Maryland average of 1972.

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

How Baltimore city County compares with Maryland's closest counties by inventory size

The 5 Maryland counties nearest Baltimore city County in number of bridges, with their condition splits. Its 8.6% Poor share is the 6th-lowest of these 6. Its average build year of 1964 against a peer-group mean of 1972 is 8 years older.

Showing the 5 closest of 23 Maryland counties eligible for comparison.

Bridge inventory size and condition shares for Baltimore city County and the 5 Maryland counties closest to it in inventory size
County Bridges Poor
Frederick County 486 2.7%
Anne Arundel County 389 1.5%
Baltimore city County (this page) 374 8.6%
Howard County 309 5.8%
Washington County 300 4.7%
Harford County 275 4.7%

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 Baltimore city 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 Baltimore city County, both outside Maryland so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside MD (374 bridges here).

Similar average build year

Nearest mean year-built outside MD (1964 here).

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

All 374 Good 60 Fair 282 Poor 32

Fair-condition bridges (282)

EDISON HIGHWAY

Fair

Over: AMTRAK RAILROAD

0.2 MI N OF MONUMENT ST, Baltimore city, MD

Built 1931 Load: 32.7 t ADT: 18,376

HAMILTON AVENUE

Fair

Over: MOORES RUN

0.6 MI SE OF BELAIR RD, Baltimore city, MD

Built 1964 Load: 32.7 t ADT: 4,563

MORAVIA ROAD

Fair

Over: BIDDISON RUN

0.2 MI N OF IS 895, Baltimore city, MD

Built 1966 Load: 32.7 t ADT: 27,420

BELAIR ROAD

Fair

Over: HERRING RUN

0.6 MI W ERDMAN AVE, Baltimore city, MD

Built 1925 Load: 32.7 t ADT: 22,752

MORAVIA PARK DRIVE

Fair

Over: BIDDISON RUN

0.3 MI NE OF IS 895, Baltimore city, MD

Built 1966 Load: 32.7 t ADT: 1,374

RUSSELL AND BUSH S

Fair

Over: SPRING GARDENS

0.3 MI NE OF MONROE ST, Baltimore city, MD

Built 1910 Load: 32.7 t ADT: 2,125

CHESAPEAKE AVENUE

Fair

Over: TRIB. TO PATAPSCO RIVER

CHESAPEAKE AVE W OF 8THST, Baltimore city, MD

Built 1920 Load: 32.7 t ADT: 3,951

LOCH RAVEN DRIVE

Fair

Over: TOWSON RUN

0.9 MI E CROMWELL BRDG RD, Baltimore city, MD

Built 1879 Load: 32.7 t ADT: 896

EAGER STREET

Fair

Over: FALLSWAY

EAGER STREET AT FALLSWAY, Baltimore city, MD

Built 1900 Load: 32.7 t ADT: 1,695

LOCH RAVEN BOULEVA

Fair

Over: W BRANCH OF HERRING RUN

0.3 MI N OF NORTHERN PKY, Baltimore city, MD

Built 1930 Load: 32.7 t ADT: 8,543

DUKELAND STREET

Fair

Over: MAIDENS CHOICE CREEK

0.5 MI E OF CATON AVE, Baltimore city, MD

Built 1950 Load: 32.7 t ADT: 11,447

NORTH VINCENT STRE

Fair

Over: AMTRAK RAILROAD

0.2 MI E OF MONROE ST, Baltimore city, MD

Built 1920 Load: 32.7 t ADT: 3,077

REMINGTON AVENUE

Fair

Over: ABANDONED RAILROAD

REMINGTON AV/ABANDONED RR, Baltimore city, MD

Built 1901 Load: 32.7 t ADT: 3,110

BARCLAY STREET

Fair

Over: CSX RAILROAD

0.1 MI W OF GREENMOUNT AV, Baltimore city, MD

Built 1900 Load: 32.7 t ADT: 7,434

GUILFORD AVENUE

Fair

Over: CSX

0.2 MI E OF GREENMOUNT AV, Baltimore city, MD

Built 1914 Load: 32.7 t ADT: 6,197

HUNTINGDON AVENUE

Fair

Over: CSX

0.2 MI W OF MARYLAND AVE, Baltimore city, MD

Built 1900 Load: 32.7 t ADT: 10,312

WYMAN PARK DRIVE

Fair

Over: STONEY RUN

0.2 MI E SISSON ST, Baltimore city, MD

Built 1920 Load: 32.7 t ADT: 1,386

YALE AVENUE

Fair

Over: MAIDENS CHOICE CREEK

0.2 MI S OF FREDERICK AVE, Baltimore city, MD

Built 1950 Load: 32.7 t ADT: 1,204

FULTON AVENUE

Fair

Over: AMTRAK RAILROAD

0.5 MI S OF NORTH AVE, Baltimore city, MD

Built 1936 Load: 32.7 t ADT: 23,998

I-95 NB CD

Fair

Over: CSX RR & BERNARD DR

0.71 MI N OF CATON AVE., Baltimore city, MD

Built 1980 Load: 32.7 t ADT: 108,194

IS 95 RAMP E

Fair

Over: HERRING RUN QUAD AVE

EX 60 NB RMP TO MORAV RD, Baltimore city, MD

Built 1974 Load: 32.7 t ADT: 6,819

IS 695 OL

Fair

Over: CURTIS CREEK B&O RR

0.36 MI N OF AA CO LINE, Baltimore city, MD

Built 1975 Load: 32.7 t ADT: 23,169

SCHROEDER STREET

Fair

Over: I-170

0.1 MI N OF SARATOGA ST, Baltimore city, MD

Built 1977 Load: 33.1 t ADT: 1,752

IS 95 RAMP D

Fair

Over: UTILITY ACCESS RD

Milepost M57.1, Baltimore city, MD

Built 1980 Load: 33.1 t ADT: 6,591

IS 95 SB

Fair

Over: DUNDALK AVE KANE ST

0.4 MI. S OF EASTERN AVE., Baltimore city, MD

Built 1976 Load: 33.1 t ADT: 76,836

I-395 NB

Fair

Over: OSTEND ST/LOTS G&H

Milepost 1.1, Baltimore city, MD

Built 1981 Load: 33.1 t ADT: 26,190

KEITH AVENUE VIADU

Fair

Over: CONSOL ENERGY RAIL YARD

KEITH AVE OVER CONSOL, Baltimore city, MD

Built 1981 Load: 33.6 t ADT: 46,104

IS 95 SB

Fair

Over: B&O RR

Milepost M52.0, Baltimore city, MD

Built 1978 Load: 33.6 t ADT: 94,226

IS 95 SB

Fair

Over: RUSSELL ST - MD 295

IS 95 AT RUSSELL ST, Baltimore city, MD

Built 1977 Load: 33.6 t ADT: 106,447

IS 95 RAMP C

Fair

Over: RUSSELL ST MONROE ST

Milepost M53.9, Baltimore city, MD

Built 1977 Load: 33.6 t ADT: 11,737

IS 95 RAMP J

Fair

Over: HANOVER ST RACE ST CSX

Milepost M55.2, Baltimore city, MD

Built 1979 Load: 33.6 t ADT: 10,013

IS 95 RAMP A

Fair

Over: QUAD AVE HERRING RUN

SB ON RAMP FROM MORAVIA, Baltimore city, MD

Built 1974 Load: 33.6 t ADT: 6,464

IS 95 NB VIADUCT

Fair

Over: ROADS RRS HERRING RUN

MILEPOST 59.6, Baltimore city, MD

Built 1974 Load: 33.6 t ADT: 70,879

RUSSELL ST

Fair

Over: GWYNNS FALLS MANOKIN ST

0.3 MI S IS 95, Baltimore city, MD

Built 1963 Load: 34.0 t ADT: 51,578

IS 95 RAMP A

Fair

Over: CSX

MILEPOST 60.0, Baltimore city, MD

Built 1973 Load: 34.0 t ADT: 6,464

I-895

Fair

Over: POTEE STREET

Milepost M6.95, Baltimore city, MD

Built 1957 Load: 34.0 t ADT: 74,587

EASTERN AVENUE

Fair

Over: I-895

MILE POINT 12.21, Baltimore city, MD

Built 1957 Load: 34.0 t ADT: 27,690

NORTHERN PKWY RAMP

Fair

Over: I-83

WB RAMP FROM N PKWY, Baltimore city, MD

Built 1959 Load: 34.5 t ADT: 5,350

PENNINGTON AVENUE

Fair

Over: CABIN BRANCH

1.5 MI S PATAPSCO AVE, Baltimore city, MD

Built 1986 Load: 34.5 t ADT: 13,500

FLEET STREET

Fair

Over: I-895

MILE POINT 12.13, Baltimore city, MD

Built 1957 Load: 34.5 t ADT: 769

I-83 RAMP B

Fair

Over: PARKING LOTS

0.2 MI N OF MADISON ST, Baltimore city, MD

Built 1976 Load: 34.9 t ADT: 8,794

PENNINGTON AVENUE

Fair

Over: CABIN BRANCH

1.5 MI S PATAPSCO AVE, Baltimore city, MD

Built 1986 Load: 34.9 t ADT: 13,500

I-895

Fair

Over: HANOVER ST

Milepost M7.06, Baltimore city, MD

Built 1957 Load: 34.9 t ADT: 74,587

I-83 NB OFF-RAMP T

Fair

Over: MTA LIGHT RAIL

0.9 MI N OF NORTH AVE, Baltimore city, MD

Built 1957 Load: 35.4 t ADT: 25,265

LOMBARD STREET VIA

Fair

Over: NORFOLK SOUTHERN RAILROA

0.2 MI W OF I-895, Baltimore city, MD

Built 1991 Load: 35.4 t ADT: 30,700

EB MORAVIA RD TO I

Fair

Over: US40 (Pulaski Highway)

0.4 MI. E. OF IS 895, Baltimore city, MD

Built 1976 Load: 35.4 t ADT: 6,464

FREDERICK AVENUE

Fair

Over: AMTRAK

AT JCT WITH HILTON ST., Baltimore city, MD

Built 1925 Load: 35.8 t ADT: 2,270

I-895

Fair

Over: PATAPSCO AVE

Milepost M6.80, Baltimore city, MD

Built 1957 Load: 35.8 t ADT: 69,152

IS 95 NB

Fair

Over: DUNDALK AVE KANE ST

0.4 MI S OF EASTERN AVE, Baltimore city, MD

Built 1976 Load: 36.7 t ADT: 69,003

NORTHERN PARKWAY

Fair

Over: I-83 JONES FALLS & MTA

1.5 MI N COLD SPRING LANE, Baltimore city, MD

Built 1962 Load: 37.2 t ADT: 53,370

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.