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

MD 165

Fair

Over: LITTLE DEER CREEK

2.35 MILES SOUTH OF MD 24, Harford, MD

Built 1930 Load: 38.5 t ADT: 6,673

MD 320

Fair

Over: NORTHWEST BRANCH

0.05 MILE SOUTH OF MD 650, Prince George's, MD

Built 1910 Load: 38.5 t ADT: 21,112

IS 95X SB

Fair

Over: IS 495 OL

0.13 M S OF BR NO 1617600, Prince George's, MD

Built 1967 Load: 38.5 t ADT: 1,131

MD 295 SB

Fair

Over: IS 95/495

0.37 MILE SOUTH OF MD 193, Prince George's, MD

Built 1963 Load: 38.5 t ADT: 109,881

IS 95/IS 495

Fair

Over: POTOMAC RIVER

ON VIRGINIA LINE, Prince George's, MD

Built 2006 Load: 38.5 t ADT: 128,275

MD 405

Fair

Over: SOUTHEAST CREEK

0.1 MILE SOUTH OF MD 19, Queen Anne's, MD

Built 1933 Load: 38.5 t ADT: 1,842

US 13 SB

Fair

Over: MEADOW BRIDGE ROAD

0.52 MILE SOUTH OF MD 513, Wicomico, MD

Built 1981 Load: 38.5 t ADT: 17,160

8TH AVENUE NW

Fair

Over: SAWMILL CREEK

0.2 MI W OF MD 3, Anne Arundel, MD

Built 1972 Load: 38.5 t ADT: 12,944

ROY SHAFER ROAD

Fair

Over: CONE BRANCH

AT BENNIES HILL RD INT, Frederick, MD

Built 1982 Load: 38.5 t ADT: 105

POFFENBERGER ROAD

Fair

Over: LEWIS MILL BRANCH

0.75 MI W OF OLD MIDDLETO, Frederick, MD

Built 1982 Load: 38.5 t ADT: 32

BYNUM ROAD

Fair

Over: BYNUM RUN

0.5 MILES NE OF MD 24, Harford, MD

Built 1976 Load: 38.5 t ADT: 4,310

POTEET ROAD

Fair

Over: EAST BRANCH/WINTERS RUN

0.01 M W OF PHILLIPS M RD, Harford, MD

Built 1995 Load: 38.5 t ADT: 35

KENNEDYVILLE ROAD

Fair

Over: MORGAN CREEK

0.8 MI SE OF MD RTE 213, Kent, MD

Built 2002 Load: 38.5 t ADT: 265

WHITON CROSSING RD

Fair

Over: POCOMOKE RIVER

0.19 MILES EAST OF MD 354, Worcester, MD

Built 1996 Load: 38.5 t ADT: 138

UPPER LEVEL ROADWA

Fair

Over: LOWER LEVEL ROADWAY

BWI AIRPORT, Anne Arundel, MD

Built 1977 Load: 38.5 t ADT: 11,760

I-895 A NB ramp

Fair

Over: I 895

Milepost A0.4 (B0.7), Anne Arundel, MD

Built 1957 Load: 38.5 t ADT: 13,017

I-695 OL

Fair

Over: MD 10

0.7 MI EAST OF MD 2, Anne Arundel, MD

Built 1981 Load: 38.5 t ADT: 18,596

US 40 PULASKI HWY

Fair

Over: I-895

Milepost M13.34, Baltimore city, MD

Built 1957 Load: 38.5 t ADT: 50,886

DEAVER ROAD

Fair

Over: I-95

Milepost M103.5, Cecil, MD

Built 1964 Load: 38.5 t ADT: 954

MD 51

Fair

Over: POTOMAC RIVER

ON WEST VIRGINIA LINE, Allegany, MD

Built 1987 Load: 39.0 t ADT: 1,502

FLETCHER DRIVE

Fair

Over: IS 68

FLETCHER DR, Allegany, MD

Built 1968 Load: 39.0 t ADT: 944

MD 256

Fair

Over: TRACEYS CREEK

1.73 MI W OF MD 258, Anne Arundel, MD

Built 1975 Load: 39.0 t ADT: 3,355

MD 25

Fair

Over: JONES FALLS

0.06 MILE SOUTH OF MD 133, Baltimore, MD

Built 1932 Load: 39.0 t ADT: 10,911

US 40

Fair

Over: STEMMERS RUN

0.39 MILES EAST OF I-695, Baltimore, MD

Built 1935 Load: 39.0 t ADT: 54,850

IS 95 SBR

Fair

Over: IS 695 RAMP C

0.68 MILE NORTH OF US 1, Baltimore, MD

Built 1969 Load: 39.0 t ADT: 176,796

MD 2 SB

Fair

Over: HUNTING CREEK

.086 MILE NORTH OF MD 263, Calvert, MD

Built 1992 Load: 39.0 t ADT: 46,798

MD 260

Fair

Over: HALL CREEK

0.32 MILE EAST OF MD 778, Calvert, MD

Built 1951 Load: 39.0 t ADT: 13,581

MD 75

Fair

Over: LITTLE PIPE CREEK

0.18 MI S OF UNION BRIDGE, Carroll, MD

Built 1922 Load: 39.0 t ADT: 4,051

US 40 EB

Fair

Over: LITTLE NORTHEAST CREEK

0.65 MILE EAST OF MD 272, Cecil, MD

Built 1939 Load: 39.0 t ADT: 14,917

US 40 WB

Fair

Over: LITTLE NORTHEAST CREEK

0.65 MILE EAST OF MD 272, Cecil, MD

Built 1939 Load: 39.0 t ADT: 14,332

MD 327

Fair

Over: AMTRAK

0.17 MILE EAST OF MD 7B, Cecil, MD

Built 1942 Load: 39.0 t ADT: 499

MD 5 SB

Fair

Over: ZEKIAH SWAMP

0.44 MILE SOUTH OF MD 488, Charles, MD

Built 1932 Load: 39.0 t ADT: 37,490

MD 6

Fair

Over: WARDS RUN

0.34 M W OF HILLTOP ROAD, Charles, MD

Built 1929 Load: 39.0 t ADT: 3,302

MD 546

Fair

Over: US 40 ALT

.07 MILE NORTH OF MD 546F, Garrett, MD

Built 1973 Load: 39.0 t ADT: 1,551

MD 543

Fair

Over: IS 95

0.23 MILE NORTH OF MD 7, Harford, MD

Built 1991 Load: 39.0 t ADT: 18,391

US 1

Fair

Over: BEALMEAR BRANCH

0.46 MILE NORTH OF MD 100, Howard, MD

Built 1929 Load: 39.0 t ADT: 35,932

US 301 SB

Fair

Over: SASSAFRAS RIVER

ON CECIL COUNTY LINE, Kent, MD

Built 1955 Load: 39.0 t ADT: 9,710

MD 445

Fair

Over: SWAN CREEK

2.60 MILES SOUTH OF MD 21, Kent, MD

Built 1929 Load: 39.0 t ADT: 780

MD 182

Fair

Over: BUCKHORN BR

1.345 M S OF MD 28, Montgomery, MD

Built 1931 Load: 39.0 t ADT: 9,850

IS 95/495

Fair

Over: MD 4

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

Built 1963 Load: 39.0 t ADT: 201,196

MD 193

Fair

Over: MD 201

0.58 MILE WEST OF IS 95, Prince George's, MD

Built 1988 Load: 39.0 t ADT: 45,720

US 301 SB

Fair

Over: MD 290

2.17 MILES N OF MD 300, Queen Anne's, MD

Built 1967 Load: 39.0 t ADT: 10,370

MD 471

Fair

Over: ST MARYS RIVER

0.36 MILE NORTH OF MD 5, St. Mary's, MD

Built 1932 Load: 39.0 t ADT: 4,242

MD 662C

Fair

Over: POTTS MILL CREEK

2.05 MILES SOUTH OF US 50, Talbot, MD

Built 1911 Load: 39.0 t ADT: 1,481

MD 66

Fair

Over: BEAVER CREEK

0.20 MILE NORTH OF MD 64, Washington, MD

Built 1900 Load: 39.0 t ADT: 4,961

IS 68 WB

Fair

Over: CREEK RD

1.0 MILE WEST OF IS 70, Washington, MD

Built 1965 Load: 39.0 t ADT: 19,000

BEAVER CREEK RD

Fair

Over: I-70

0.75 MI W OF US 40, Washington, MD

Built 1965 Load: 39.0 t ADT: 999

MD 353

Fair

Over: AYDELOTTE BRANCH

0.77 MILE NORTH OF MD 346, Wicomico, MD

Built 1961 Load: 39.0 t ADT: 4,162

MD 365

Fair

Over: PATTYS BRANCH

0.09 MILE EAST OF US 113, Worcester, MD

Built 1967 Load: 39.0 t ADT: 1,310

BELL BRANCH ROAD

Fair

Over: BELL BRANCH

1.2 MI EAST OF RTE 424, Anne Arundel, MD

Built 1970 Load: 39.0 t ADT: 656

Showing 1,351-1,400 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.