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)

Counties (24)

Allegany 245 Anne Arundel 389 Baltimore 783 Baltimore city 374 Calvert 33 Caroline 70 Carroll 205 Cecil 193 Charles 94 Dorchester 47 Frederick 486 Garrett 139 Harford 275 Howard 309 Kent 44 Montgomery 515 Prince George's 576 Queen Anne's 88 Somerset 46 St. Mary's 50 Talbot 42 Washington 300 Wicomico 99 Worcester 82

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.

WASHINGTON STREET

Poor

Over: CSXT RAILROAD

0.2 MI W OF CUMBERLAND ST, Allegany, MD

Built 1930 Load: 0.0 t ADT: 110

CUMBERLAND STREET

Poor

Over: CSXT RAILROAD

0.6 MI E OF WASHINGTON ST, Allegany, MD

Built 1929 Load: 0.0 t ADT: 110

MILL STREET

Poor

Over: ROCK RUN

.01 MI S. OF RACE STREET, Cecil, MD

Built 1940 Load: 0.0 t ADT: 100

BACK LANDING ROAD

Poor

Over: HUNTING CREEK

ON CAROLINE COUNTY LINE, Dorchester, MD

Built 1941 Load: 0.0 t

TALBOT AVENUE

Poor

Over: CSXT RAILROAD

0.2 MI E OF MICHIGAN AVE, Montgomery, MD

Built 1918 Load: 0.0 t ADT: 1,430

TAYLOR MILL ROAD

Poor

Over: OLD MILL STREAM BRANCH

0.7 MILE EAST OF MD 213, Queen Anne's, MD

Built 1955 Load: 0.0 t ADT: 100

All Bridges in Maryland

IS 70 EB

Poor

Over: MD 632

1.35 MILES WEST OF MD 65, Washington, MD

Built 1966 Load: 43.1 t ADT: 62,680

IS 70 WB

Poor

Over: MD 632

1.35 MILES WEST OF MD 65, Washington, MD

Built 1966 Load: 43.1 t ADT: 62,680

SNOWY CREEK ROAD

Poor

Over: SNOWY CREEK

1.05 MI. SW. OF HUTTON RD, Garrett, MD

Built 1957 Load: 43.1 t ADT: 209

HAMMONDS FERRY ROA

Poor

Over: CSX RAILROAD

50 FT N LANSDOWNE RD, Baltimore, MD

Built 1961 Load: 43.5 t ADT: 7,077

IS 70 EB

Poor

Over: US 11

0.33 MILE EAST OF IS 81, Washington, MD

Built 1965 Load: 44.0 t ADT: 62,680

MD 4 WBR

Poor

Over: MD 717

0.65 MILE NORTH OF US 301, Prince George's, MD

Built 1959 Load: 44.4 t ADT: 46,652

RUSSELL STREET

Poor

Over: CSX

0.2 MI S OF I-95, Baltimore city, MD

Built 1963 Load: 44.4 t ADT: 46,276

IS 70 WB

Poor

Over: US 11

0.33 MILE EAST OF IS 81, Washington, MD

Built 1965 Load: 44.9 t ADT: 62,680

IS 70 RAMP A

Poor

Over: BEAVER CREEK

0.08 MI W OF MD 66, Washington, MD

Built 1968 Load: 44.9 t ADT: 37,200

I-83

Poor

Over: MTA LIGHT RAIL

AT CITY LINE, Baltimore city, MD

Built 1962 Load: 44.9 t ADT: 29,900

HAWKINS POINT ROAD

Poor

Over: CSX

.1 MI S OF 695, Baltimore city, MD

Built 1930 Load: 44.9 t ADT: 15,177

WEST GUDE DRIVE

Poor

Over: I-270

0.35 MILES EAST OF MD 28, Montgomery, MD

Built 1985 Load: 44.9 t ADT: 30,343

GILMOR STREET

Poor

Over: I-170

0.1 MI N OF SARATOGA ST, Baltimore city, MD

Built 1975 Load: 45.8 t ADT: 3,243

MIDDLE NECK ROAD

Poor

Over: SANDY BRANCH

0.05 EAST OF OLD TELE RD, Cecil, MD

Built 1998 Load: 45.8 t ADT: 387

FRAZIER NECK ROAD

Poor

Over: LITTLE CREEK

0.6 MILES SOUTH OF MD 331, Caroline, MD

Built 1994 Load: 46.7 t ADT: 1,015

TUCKERMAN STREET

Poor

Over: BALD HILL BRANCH

0.02 MI E OF CIPRIANO RD, Prince George's, MD

Built 1963 Load: 46.7 t ADT: 3,386

ROCK AVE

Poor

Over: MIDWAY BRANCH

.03 MI W LEONARD WOOD AVE, Anne Arundel, MD

Built 1984 Load: 47.3 t ADT: 800

PENINSULA EXPRESSW

Poor

Over: CSX RAILROAD

0.5 MI E MERRITT BLVD, Baltimore, MD

Built 1960 Load: 48.1 t ADT: 11,183

PENINSULA EXPRESSW

Poor

Over: CSX RAILROAD

0.5 MI E MERRITT BLVD, Baltimore, MD

Built 1960 Load: 48.1 t ADT: 11,183

CLIPPER MILL ROAD

Poor

Over: PRETTYBOY RESERVOIR

0.3 MI E GUNPOWDER RD, Baltimore, MD

Built 1931 Load: 48.1 t ADT: 302

OPOSSUMTOWN PIKE

Poor

Over: BIG TUSCARORA CREEK

AT SUNDAYS LANE INT, Frederick, MD

Built 1988 Load: 48.1 t ADT: 1,028

MD 144

Poor

Over: TOWN CREEK

0.37 MI E OF US 40AF, Allegany, MD

Built 1957 Load: 49.0 t ADT: 1,121

MD 136

Poor

Over: FALLING BRANCH

0.55 MILE NORTH OF MD 24, Harford, MD

Built 1931 Load: 49.4 t ADT: 2,161

BREHMS LANE

Poor

Over: HERRING RUN

0.8 MI W ERDMAN AVE, Baltimore city, MD

Built 1963 Load: 49.4 t ADT: 32,043

MECHANICS VALLEY R

Poor

Over: CSX RAILROAD

1.58 MILES N OF MD 7, Cecil, MD

Built 1975 Load: 49.4 t ADT: 4,734

SPRING STREET

Poor

Over: CSXT RR & WMATA METRO

0.3 MI SOUTH OF MD 97, Montgomery, MD

Built 1968 Load: 49.9 t ADT: 8,204

TUCKERMAN LANE

Poor

Over: SNAKEDEN BRANCH

.5 MI W OF SEVEN LOCKS RD, Montgomery, MD

Built 1966 Load: 49.9 t ADT: 19,882

LANSDOWNE BOULEVAR

Poor

Over: CSX RAILROAD

50 FT W HAMMONDS FERRY RD, Baltimore, MD

Built 1964 Load: 50.8 t ADT: 7,620

MORAVIA RD RAMP E

Poor

Over: PULASKI HIGHWAY

.2 MI. W. OF I 95, Baltimore city, MD

Built 1956 Load: 50.8 t ADT: 7,760

PULASKI HIGHWAY

Poor

Over: HERRING RUN

0.6 MI W OF IS 95, Baltimore city, MD

Built 1921 Load: 50.8 t ADT: 58,858

BRYANTOWN ROAD

Poor

Over: MILL DAM RUN

0.66 MI N OF MD 5, Charles, MD

Built 1933 Load: 51.7 t ADT: 1,497

CATCHPENNY ROAD

Poor

Over: TERRY BRANCH

0.2 MI S OF MD RTE 349, Wicomico, MD

Built 1951 Load: 51.7 t ADT: 435

OLD KILN ROAD

Poor

Over: LITTLE OWENS CREEK

0.06 MI EAST OF RODDY RD, Frederick, MD

Built 1975 Load: 52.6 t ADT: 338

BALTIMORE STREET

Poor

Over: WILLS CREEK

0.02 MI NE OF GREENE ST, Allegany, MD

Built 1916 Load: 53.1 t ADT: 11,780

SINCLAIR LANE

Poor

Over: MOORES RUN

0.7 MI S RADECKE AVE, Baltimore city, MD

Built 1962 Load: 53.5 t ADT: 18,265

FRANKLINTOWN ROAD

Poor

Over: GWYNNS FALLS

0.4 MI W HILTON PKWY, Baltimore city, MD

Built 1970 Load: 54.0 t ADT: 3,379

PERRING PKWY RAMP

Poor

Over: HERRING RUN

ON RAMP WB NORTHERN PKWY, Baltimore city, MD

Built 1965 Load: 55.3 t ADT: 74,402

FORT AVENUE

Poor

Over: CSX

0.2 MI. W. OF FT. MCHENRY, Baltimore city, MD

Built 1923 Load: 55.3 t ADT: 2,755

OCONNOR ROAD

Poor

Over: DEEP RUN

0.1 MI N OF MD RTE 103, Anne Arundel, MD

Built 1944 Load: 55.8 t ADT: 599

PONCA STREET

Poor

Over: CANTON RAILROAD

PONCA ST. OVER CANTON RR, Baltimore city, MD

Built 1973 Load: 57.1 t ADT: 2,287

HORNETS NEST ROAD

Poor

Over: FRIENDS CREEK

2.0 MILES W OF RIFFLE RD, Frederick, MD

Built 1981 Load: 58.0 t ADT: 179

WOODBOURNE AVENUE

Poor

Over: HERRING RUN

0.09 MI E PERRING PKWY, Baltimore city, MD

Built 1974 Load: 58.5 t ADT: 13,233

LAMBSON FOREST ROA

Poor

Over: MILLS BRANCH

1 MI SE OF MD RTE 290, Kent, MD

Built 1975 Load: 59.4 t ADT: 265

TAMAR DRIVE

Poor

Over: UNNAMED STREAM

0.1 MI E PHELPS LUCK, Howard, MD

Built 1970 Load: 60.8 t ADT: 10,941

OLD MT PLEASANT RD

Poor

Over: EVITTS CREEK

1.48 MILES NE OF I-68, Allegany, MD

Built 1952 Load: 64.9 t ADT: 244

US 219

Poor

Over: YOUGHIOGHENY RIVER

1.28 MILES SOUTH OF US 50, Garrett, MD

Built 1900 Load: 65.8 t ADT: 1,660

RIVERDALE ROAD

Poor

Over: NE BRANCH OF ANACOSTIA R

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

Built 1931 Load: 66.2 t ADT: 7,399

QUINCE ORCHARD ROA

Poor

Over: MUDDY BRANCH

1.8 MILES SOUTH OF MD 28, Montgomery, MD

Built 1965 Load: 66.7 t ADT: 5,297

WILKENS AVENUE

Poor

Over: GWYNNS FALLS

0.4 MI E CATON AVE, Baltimore city, MD

Built 1936 Load: 67.6 t ADT: 35,470

DOGSTREET ROAD

Poor

Over: DOG CREEK

1.3 MI W OF MD RTE 67, Washington, MD

Built 1940 Load: 67.6 t ADT: 1,408

Showing 5,401-5,450 of 5,484 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
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.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.

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.