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

FURNACE AVENUE

Fair

Over: DEEP RUN

ON THE HOWARD CO LINE, Anne Arundel, MD

Built 1930 Load: 30.4 t ADT: 2,531

NORTH FOREST PARK

Fair

Over: DOGWOOD ROAD AND DEAD RU

300 FT E OF SECURITY BLVD, Baltimore, MD

Built 1963 Load: 30.4 t ADT: 23,080

DOGWOOD ROAD

Fair

Over: BRICE RUN

0.92 MI S OF MD 125, Baltimore, MD

Built 1930 Load: 30.4 t ADT: 1,300

MONTEVUE LANE

Fair

Over: CARROLL CREEK

1.1 MI. W OF US 15, Frederick, MD

Built 1995 Load: 30.4 t ADT: 9,791

GREEN ROAD

Fair

Over: DEER CREEK

0.2 MILES E OF BALT CO, Harford, MD

Built 1900 Load: 30.4 t ADT: 155

CALVERTON BLVD

Fair

Over: TRIB TO LITTLE PAINT BR

0.3 MI W OF BELTSVILLE DR, Prince George's, MD

Built 1964 Load: 30.4 t ADT: 18,162

MD 935

Fair

Over: GEORGES CREEK

0.24 MI S OF MD 935A, Allegany, MD

Built 1930 Load: 30.8 t ADT: 1,430

US 40 ALT

Fair

Over: BRADDOCK RUN

1.28 MI W OF MD 831A, Allegany, MD

Built 1948 Load: 30.8 t ADT: 13,491

MD 408

Fair

Over: MD 4

0.15 MILE WEST OF MD 794, Anne Arundel, MD

Built 1993 Load: 30.8 t ADT: 8,412

MD 695 IL

Fair

Over: MD 150

0.62 MILE SOUTH OF MD 151, Baltimore, MD

Built 1965 Load: 30.8 t ADT: 41,012

MD 313

Fair

Over: FAULKNER BRANCH

1.2 MILE NORTH OF MD 315, Caroline, MD

Built 1955 Load: 30.8 t ADT: 5,080

MD 84

Fair

Over: ROOP BRANCH

.29 MILE NORTH OF MD 800B, Carroll, MD

Built 1948 Load: 30.8 t ADT: 1,702

MD 16

Fair

Over: CABIN CREEK

1.84 MILE SOUTH OF MD 331, Dorchester, MD

Built 1944 Load: 30.8 t ADT: 1,861

MD 180

Fair

Over: BALLENGER CREEK

1.74 MILES WEST OF IS 70, Frederick, MD

Built 1925 Load: 30.8 t ADT: 3,850

MD 550

Fair

Over: MONOCACY RIVER

2.68 MILES N OF MD 194, Frederick, MD

Built 1967 Load: 30.8 t ADT: 3,691

OLD MORGANTOWN RD

Fair

Over: INTERSTATE 68

4.48 MI E OF MD 742, Garrett, MD

Built 1975 Load: 30.8 t ADT: 999

US 40

Fair

Over: SWAN CREEK

0.26 MILE WEST OF MD 132B, Harford, MD

Built 1935 Load: 30.8 t ADT: 27,800

MD 97

Fair

Over: HAWLINGS RIVER

0.88 MILE SOUTH OF MD 650, Montgomery, MD

Built 1930 Load: 30.8 t ADT: 10,740

IS 95/495

Fair

Over: MD 414

1.56 MILES N OF MD 210, Prince George's, MD

Built 1963 Load: 30.8 t ADT: 143,828

MD 675

Fair

Over: MANOKIN RIVER

0.08 MILE NORTH OF MD 918, Somerset, MD

Built 1921 Load: 30.8 t ADT: 7,131

IS 81 NB

Fair

Over: SHOWALTER ROAD

1.66 MILES S OF PA LINE, Washington, MD

Built 1958 Load: 30.8 t ADT: 47,030

IS 81 SB

Fair

Over: SHOWALTER ROAD

1.66 MILES S OF PA LINE, Washington, MD

Built 1958 Load: 30.8 t ADT: 47,030

WALNUT POINT RD

Fair

Over: IS 70

1.17 MILES S OF US 40, Washington, MD

Built 1965 Load: 30.8 t ADT: 566

MD 12

Fair

Over: SPRING HILL BRANCH

0.61 MILE SOUTH OF MD 12A, Worcester, MD

Built 1954 Load: 30.8 t ADT: 2,560

OFFUTT ROAD

Fair

Over: SCOTTS LEVEL BRANCH

0.09 MI N OF ZETA WAY, Baltimore, MD

Built 1968 Load: 30.8 t ADT: 9,455

I-83

Fair

Over: JONES FALLS

0.3 MI N COLD SPRING LANE, Baltimore city, MD

Built 1962 Load: 30.8 t ADT: 23,800

RUSSELL STREET

Fair

Over: MONROE STREET

RUSSELL ST VIA OV MONROE, Baltimore city, MD

Built 2007 Load: 30.8 t ADT: 13,000

BUFFALO RUN ROAD

Fair

Over: BUFFALO RUN

1.33 MI E OF MD RTE 42, Garrett, MD

Built 1982 Load: 30.8 t ADT: 40

CEDAR LANE

Fair

Over: TRIB / BYNUM RUN

0.8 MILES W OF MD 136, Harford, MD

Built 1971 Load: 30.8 t ADT: 125

MARYLAND AVENUE

Fair

Over: TIBER BRANCH

AT MAIN STREET, Howard, MD

Built 1955 Load: 30.8 t ADT: 6,000

CAMPUS DR

Fair

Over: DEEP CREEK

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

Built 1964 Load: 30.8 t ADT: 22,650

GOSSARD MILL ROAD

Fair

Over: ROCKDALE RUN

0.8 MI SE OF MD 494, Washington, MD

Built 1977 Load: 30.8 t ADT: 330

DUNG HILL ROAD

Fair

Over: NORTH BRANCH CASSELMAN R

0.7 MI. WEST MD. RTE 495, Garrett, MD

Built 1956 Load: 31.1 t ADT: 676

MD 25

Fair

Over: JONES FALLS

0.20 MILE SOUTH OF IS 83, Baltimore, MD

Built 1930 Load: 31.3 t ADT: 10,911

MD 702 EBR

Fair

Over: NORTHEAST CREEK

0.10 MILE WEST OF MD 695, Baltimore, MD

Built 1972 Load: 31.3 t ADT: 18,645

MD 482

Fair

Over: EAST BRANCH PATAPSCO RIV

0.80 MI W OF HAMPSTEAD, Carroll, MD

Built 1936 Load: 31.3 t ADT: 8,212

MD 277

Fair

Over: BIG ELK CREEK

0.47 MILE WEST OF MD 316, Cecil, MD

Built 1969 Load: 31.3 t ADT: 3,150

MD 272 NB

Fair

Over: BR OF NORTHEAST CREEK

0.41 MILE SOUTH OF MD 7C, Cecil, MD

Built 1968 Load: 31.3 t ADT: 8,302

MD 28

Fair

Over: MONOCACY RIVER

0.98 MI W OF MONT CO, Frederick, MD

Built 1931 Load: 31.3 t ADT: 9,175

US 40 ALT

Fair

Over: BIG SHADE RUN

0.62 MILE WEST OF MD 669, Garrett, MD

Built 1932 Load: 31.3 t ADT: 1,783

MD 543

Fair

Over: BR OF BYNUM RUN

0.3 MILE NORTH OF MD 136, Harford, MD

Built 1936 Load: 31.3 t ADT: 14,221

MD 291

Fair

Over: MORGAN CREEK

1.83 MILES EAST OF MD 213, Kent, MD

Built 1933 Load: 31.3 t ADT: 6,235

MD 189

Fair

Over: IS 270 & C-D ROADS

0.96 MILE SOUTH OF MD 28, Montgomery, MD

Built 1988 Load: 31.3 t ADT: 9,304

MD 190

Fair

Over: IS 495

1.19 MILES WEST OF MD 188, Montgomery, MD

Built 1962 Load: 31.3 t ADT: 22,022

MD 213

Fair

Over: THREE BRIDGES BRANCH

0.39 MILE NORTH OF MD 305, Queen Anne's, MD

Built 1909 Load: 31.3 t ADT: 6,761

MD 5

Fair

Over: MCINTOSH RUN

0.14 MILE SOUTH OF MD 243, St. Mary's, MD

Built 1935 Load: 31.3 t ADT: 22,220

US 13 SB

Fair

Over: US 13 BU NB AND NORFOLK

0.47 MILE N OF US 13 BUS, Wicomico, MD

Built 1980 Load: 31.3 t ADT: 17,160

THORNTON ROAD

Fair

Over: TRIBUTARY TO ROLAND RUN

0.6 MI N OF JOPPA RD, Baltimore, MD

Built 1923 Load: 31.3 t ADT: 8,249

HUNTER MILL ROAD

Fair

Over: TRIBUTARY TO FIRST MINE

100 FT W OF VERNON ROAD, Baltimore, MD

Built 1988 Load: 31.3 t ADT: 325

STRINGTOWN ROAD

Fair

Over: BLACKROCK RUN

0.2 MI E OF FALLS RD, Baltimore, MD

Built 1931 Load: 31.3 t ADT: 332

Showing 501-550 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.