State profile · Below median Poor share

Maryland bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Maryland.

5,484
Public bridges
32.3%
Good condition
4.6%
Poor condition

Maryland holds 5,484 public highway bridges (#34 of 52 by inventory) with a 4.56% Poor share (#38 of 52 by Poor share).

That is 4.6% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 15 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

5,484

Public highway bridges in Maryland

Good Condition

32.3%

1,771 bridges rated 7-9

-17.7pp vs 50% benchmark

Poor Condition

4.6%

250 bridges whose lowest applicable component is rated 0-4

-3.0pp vs national avg 7.5%

Maryland vs national bridge condition

Maryland - Good condition share 32.3%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Maryland - Poor-condition share 15.2%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

Maryland in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: Maryland has 5,484 bridges and a 4.6% Poor-condition share in the 2024 NBI, rank #15 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: Maryland has 5,484 bridges and a 4.6% Poor-condition share in the 2024 NBI, rank #15 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

Maryland vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

5,484 34th of 54 higher than 20 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for Maryland

The highlighted point is Maryland: 5,484 bridges and 4.56% in Poor condition, rank #15 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Maryland on that same Poor-share ordering:

  • Minnesota: 13,532 bridges · 4.44% Poor
  • New Mexico: 4,035 bridges · 4.51% Poor
  • Maryland: 5,484 bridges · 4.56% Poor
  • Oregon: 8,305 bridges · 4.61% Poor
  • Connecticut: 4,365 bridges · 4.72% Poor

The full national sortable table lives on the rankings page.

Material families in Maryland

Exclusive FHWA material families across all 5,484 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Maryland’s inventory

State agency holds 53.4% of the 5,484 public highway bridges filed under Maryland in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Maryland’s bridges were built

Pre-1950 construction accounts for 15.9% of the 5,484 bridges with a recorded original year in Maryland. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Maryland32.3%63.1%GoodFairPoor
Bridge inventory deck-condition mix - Maryland (FHWA NBI)

Maryland vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Maryland on the same metric.

MN

Minnesota

4.44% top marginal rate
Structure
Progressive
Burden @ $100K
$13,532

NM

New Mexico

4.51% top marginal rate
Structure
Progressive
Burden @ $100K
$4,035
Selected

MD

Maryland

4.56% top marginal rate
Structure
Progressive
Burden @ $100K
$5,484

OR

Oregon

4.61% top marginal rate
Structure
Progressive
Burden @ $100K
$8,305

CT

Connecticut

4.72% top marginal rate
Structure
Progressive
Burden @ $100K
$4,365

Bridges Needing Most Attention in Maryland

Six lowest-condition bridges in Maryland, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

All Bridges in Maryland

GRABENSTEIN ROAD

Poor

Over: ELK LICK RUN

0.04 MI S OF MD 144, Allegany, MD

Built 1940 Load: 32.7 t ADT: 1,075

41ST STREET

Poor

Over: I-83 AND JONES FALLS

2.1 MI N NORTH AVE, Baltimore city, MD

Built 1930 Load: 32.7 t ADT: 10,157

RADECKE AVENUE

Poor

Over: MOORES RUN

0.2 MI W CEDONIA AVE, Baltimore city, MD

Built 1930 Load: 32.7 t ADT: 10,737

HANOVER STREET

Poor

Over: CSX

HANOVER ST OVER CSX RR, Baltimore city, MD

Built 1929 Load: 32.7 t ADT: 28,030

HARFORD ROAD

Poor

Over: CSX RAILROAD

0.2 MI NE OF BROADWAY, Baltimore city, MD

Built 1900 Load: 32.7 t ADT: 10,713

GREENMOUNT AVENUE

Poor

Over: CSX RAILROAD

0.5 MI N OF NORTH AVE, Baltimore city, MD

Built 1914 Load: 32.7 t ADT: 10,713

LIBERTY GROVE ROAD

Poor

Over: ROCK RUN CREEK

0.7 N OF OLD SCHOOLHOUSE, Cecil, MD

Built 1940 Load: 32.7 t ADT: 918

GRANITE AVENUE

Poor

Over: ROCK RUN CREEK

0.8 MI E OF MAIN ST., Cecil, MD

Built 1930 Load: 32.7 t ADT: 300

OLD MORGANTOWN ROA

Poor

Over: BUFFALO RUN

0.26 MI E OF MD RTE 42, Garrett, MD

Built 1919 Load: 32.7 t ADT: 122

THIRD STREET

Poor

Over: LITTLE YOUGHIOGHENY RIVE

0.12 MI S OF OAK STREET, Garrett, MD

Built 1968 Load: 32.7 t ADT: 1,310

JARRETTSVILLE ROAD

Poor

Over: EAST BRANCH /WINTERS RUN

1.9 MILES E OF MD 165, Harford, MD

Built 1950 Load: 32.7 t ADT: 4,308

MD 5

Poor

Over: HILTON RUN

1.86 MILES N OF MD 489, St. Mary's, MD

Built 1936 Load: 33.1 t ADT: 8,010

PATAPSCO AVENUE WB

Poor

Over: PATAPSCO RIVER

2 MI E BAL WASH EXPR, Baltimore city, MD

Built 1961 Load: 33.1 t ADT: 55,154

BLACK ANKLE ROAD

Poor

Over: TALBOT BRANCH

AT TALBOT RUN ROAD INTERS, Frederick, MD

Built 1979 Load: 33.1 t ADT: 278

MD 144

Poor

Over: EVITTS CREEK

0.08 MILE EAST OF US 40AB, Allegany, MD

Built 1966 Load: 33.6 t ADT: 7,221

WHEATLEY ROAD

Poor

Over: WEST BRANCH

0.99 MI NE OF MD 272, Cecil, MD

Built 1966 Load: 33.6 t ADT: 304

HESSONG BRIDGE RD

Poor

Over: FISHING CREEK

AT POWELL RD INT, Frederick, MD

Built 1931 Load: 33.6 t ADT: 761

ROSSVILLE BOULEVAR

Poor

Over: AMTRAK AND OREMS ROAD

0.8 MI SE OF PULASKI HWY, Baltimore, MD

Built 1971 Load: 34.0 t ADT: 20,575

SISSON STREET

Poor

Over: CSX

0.3 MI W OF MARYLAND AVE, Baltimore city, MD

Built 1914 Load: 34.0 t ADT: 6,500

CHERRY HILL ROAD

Poor

Over: LITTLE PAINT BRANCH

0.5 MILES WEST OF US 1, Prince George's, MD

Built 1966 Load: 34.0 t ADT: 22,938

DOUBLE ROCK ACCESS

Poor

Over: STEMMERS RUN

0.1 MILES NW OF BELAIR RD, Baltimore, MD

Built 1950 Load: 34.5 t

MOLLY BERRY ROAD

Poor

Over: TRIB TO MATAPONI CREEK

0.12 MI S OF MD 382, Prince George's, MD

Built 1956 Load: 34.9 t ADT: 770

BRANDYWINE ROAD

Poor

Over: PISCATAWAY CREEK

2.27 MILES NORTH OF MD 5, Prince George's, MD

Built 1955 Load: 34.9 t ADT: 6,771

RUSSELL STREET VIA

Poor

Over: OSTEND STREET AND CSX

RUSSELL ST VIA OV OSTEND, Baltimore city, MD

Built 1951 Load: 35.8 t ADT: 70,700

SHOOKSTOWN ROAD

Poor

Over: CARROLL CREEK

0.4 MI N. OF US 15 EXIT 7, Frederick, MD

Built 1911 Load: 35.8 t ADT: 6,750

OLD COURT ROAD

Poor

Over: GWYNNS FALLS AND MTA MET

1.1 MI SW OF MD RTE 140, Baltimore, MD

Built 1961 Load: 36.3 t ADT: 16,335

MONROE STREET RAMP

Poor

Over: CSX

0.2 MI S OF IS 95, Baltimore city, MD

Built 1963 Load: 36.3 t ADT: 16,520

HENRYTON ROAD

Poor

Over: TRIBUTARY OF PATAPSCO RI

1.24 MI N OF MD RTE 99, Howard, MD

Built 1925 Load: 36.3 t ADT: 1,180

LIVINGSTON ROAD

Poor

Over: HUNTERS MILL BRANCH

0.41 MI S OF MD 210, Prince George's, MD

Built 1977 Load: 36.3 t ADT: 5,600

UNION STREET

Poor

Over: TRIBUTARY TO NORTH BRANC

50 FT SOUTH OF E MAIN ST, Garrett, MD

Built 1930 Load: 36.7 t ADT: 100

BELVIDERE ROAD

Poor

Over: CSX RAILROAD

0.82 MI S OF IS 95, Cecil, MD

Built 1973 Load: 37.2 t ADT: 1,623

GREENTREE ROAD

Poor

Over: BULLS RUN

0.5 MI E OF JCT SR 191, Montgomery, MD

Built 1949 Load: 37.2 t ADT: 10,816

POWHATAN STREET

Poor

Over: BRIER DITCH

AT WESTBROOK DRIVE, Prince George's, MD

Built 1975 Load: 37.2 t ADT: 1,672

MUMMAFORD ROAD

Poor

Over: MONOCACY RIVER

4.3 M E KEYSVILLE ROAD, Carroll, MD

Built 1911 Load: 38.1 t ADT: 268

SENECA ROAD

Poor

Over: BEAVER RUN BRANCH

0.5 MI E OF US RTE 29, Howard, MD

Built 1960 Load: 38.5 t ADT: 896

WEST LAFAYETTE AVE

Poor

Over: AMTRAK

0.2 MI W OF MONROE ST, Baltimore city, MD

Built 1931 Load: 39.0 t ADT: 7,030

STAFFORD ROAD

Poor

Over: BUCK BRANCH

0.5 MIL W OF GRAIGS CR RD, Harford, MD

Built 1980 Load: 39.0 t ADT: 508

KELLY AVENUE

Poor

Over: I-83 JONES FALLS & MTA

KELLY AVE AND FALLS RD, Baltimore city, MD

Built 1925 Load: 39.5 t ADT: 17,463

CAMPUS DRIVE

Poor

Over: NORTHEAST BRANCH

0.33 MI W OF MD 201, Prince George's, MD

Built 1964 Load: 39.5 t ADT: 8,781

BEECHWOOD ROAD

Poor

Over: KOONTZ RUN

1 MILE N. of DOUGLAS HILL, Allegany, MD

Built 1983 Load: 39.9 t ADT: 56

GLENVILLE ROAD

Poor

Over: MILL BROOK

2.1 MILES NE OF MD 22, Harford, MD

Built 1930 Load: 39.9 t ADT: 816

BROWNS BRIDGE ROAD

Poor

Over: PATUXENT RIVER

1.4 MI E OF MD 650, Howard, MD

Built 1953 Load: 39.9 t ADT: 5,772

PATAPSCO AVENUE EB

Poor

Over: PATAPSCO RIVER

2 MI E BAL WASH EXPR, Baltimore city, MD

Built 1961 Load: 40.4 t ADT: 27,672

MCKINSTRY MILL RD

Poor

Over: LITTLE PIPE CREEK

0.04 MI S OF MD 75, Carroll, MD

Built 1900 Load: 40.4 t ADT: 234

FRIENDSVILLE - ADD

Poor

Over: MILL RUN

0.04 MI S OF MILL RUN RD, Garrett, MD

Built 1950 Load: 40.8 t ADT: 345

MD 26

Poor

Over: LIBERTY RESERVOIR

ON BALTO CO LINE, Carroll, MD

Built 1954 Load: 41.7 t ADT: 20,192

IS 70

Poor

Over: INGLESIDE AVENUE

0.3 MI W OF BALTO CITY, Baltimore, MD

Built 1968 Load: 42.6 t ADT: 15,410

BRINK ROAD

Poor

Over: GREAT SENECA CREEK

2.1 MILES EAST OF MD 27, Montgomery, MD

Built 1936 Load: 42.6 t ADT: 16,456

DENNIS AVENUE

Poor

Over: SLIGO CREEK TRIBUTARY

0.32 MI E OF JCT SR 97, Montgomery, MD

Built 1961 Load: 42.6 t ADT: 8,590

MILL STREET

Poor

Over: WICOMICO RIVER EAST BRAN

500 FT S OF US RTE 50, Wicomico, MD

Built 1958 Load: 42.6 t ADT: 11,996

Showing 5,351-5,400 of 5,484 bridges

Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

What to do with this

Use Maryland's inventory picture to drill to a county or a specific span.

  • Browse counties in Maryland and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Maryland Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.