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

I-895

Fair

Over: LOMBARD STREET

Milepost M12.51, Baltimore city, MD

Built 1957 Load: 46.3 t ADT: 6,293

I-95 Northbound

Fair

Over: RED TOAD RD

Milepost M97.6, Cecil, MD

Built 1963 Load: 46.3 t ADT: 38,564

I-95 Southbound

Fair

Over: RED TOAD RD

Milepost M97.6, Cecil, MD

Built 1963 Load: 46.3 t ADT: 41,762

SUITLAND PARKWAY

Fair

Over: SUITLAND ROAD

1.6 MILES WEST OF FORESTV, Prince George's, MD

Built 1944 Load: 46.3 t ADT: 16,850

MD 36

Fair

Over: NORTH BRANCH

0.04 MILE SOUTH OF MD 47, Allegany, MD

Built 1960 Load: 46.7 t ADT: 2,290

MD 948AL

Fair

Over: IS 68

1.27 MI E OF US 40 SC, Allegany, MD

Built 1990 Load: 46.7 t ADT: 110

MD 710

Fair

Over: MD 10

0.56 MI N OF MD 2, Anne Arundel, MD

Built 1973 Load: 46.7 t ADT: 32,670

N THOMPSON AVENUE

Fair

Over: MD 10

0.79 MI N OF MD 648E, Anne Arundel, MD

Built 1975 Load: 46.7 t ADT: 32,100

ARUNDEL MILLS BLVD

Fair

Over: MD 295

0.55 M S OF WRIGHT ROAD, Anne Arundel, MD

Built 2001 Load: 46.7 t ADT: 10,499

IS 695

Fair

Over: JOPPA ROAD

0.34 MILE SOUTH OF MD 41, Baltimore, MD

Built 1961 Load: 46.7 t ADT: 144,880

MD 940

Fair

Over: CSX TRANS & GWYNNS FALLS

0.08 MILE SOUTH OF MD 140, Baltimore, MD

Built 1985 Load: 46.7 t ADT: 45,921

US 340 EBR

Fair

Over: MD 180 WBR

0.07 MILE EAST OF MD 180, Frederick, MD

Built 1964 Load: 46.7 t ADT: 23,492

US 15 NBR

Fair

Over: MD 77 HUNTING CREEK

0.46 MILE SOUTH OF MD 15D, Frederick, MD

Built 1957 Load: 46.7 t ADT: 30,410

MD 136

Fair

Over: BIG BRANCH

2.64 MILES NORTH OF MD 24, Harford, MD

Built 1934 Load: 46.7 t ADT: 2,420

MD 24

Fair

Over: AMTRAK SIBERT RD

1.66 MILES S OF MD 755, Harford, MD

Built 1974 Load: 46.7 t ADT: 16,092

IS 95 NB

Fair

Over: MIDDLE PATUXENT RIVER

0.18 MILE NORTH OF IS 95I, Howard, MD

Built 1970 Load: 46.7 t ADT: 186,750

IS 95 NB

Fair

Over: LITTLE PATUXENT RIVER

0.46 MILE SOUTH OF MD 32, Howard, MD

Built 1971 Load: 46.7 t ADT: 104,355

IS 70 RAMP 3

Fair

Over: TERRAPIN BRANCH

0.02 MILE WEST OF MD 32, Howard, MD

Built 1972 Load: 46.7 t ADT: 1,889

MD 320

Fair

Over: SLIGO CREEK

0.69 MILE SOUTH OF MD 193, Montgomery, MD

Built 1920 Load: 46.7 t ADT: 19,392

MD 198 EB

Fair

Over: IS 95 RAMP B(7)

1.59 MILES WEST OF MD 216, Prince George's, MD

Built 1971 Load: 46.7 t ADT: 49,801

US 340

Fair

Over: ISRAEL CRK APPALA. TRL.

0.18 MILE EAST OF MD 67, Washington, MD

Built 1963 Load: 46.7 t ADT: 23,943

US 50 EB

Fair

Over: BARREN CREEK

0.26 MILE EAST OF MD 313, Wicomico, MD

Built 1965 Load: 46.7 t ADT: 25,871

MARION STREET

Fair

Over: I-68

0.23 MI W OF MD 639, Allegany, MD

Built 1968 Load: 46.7 t ADT: 30,530

WAVERLY STREET

Fair

Over: GEORGES CREEK

0.03 MI W OF MD 937, Allegany, MD

Built 1993 Load: 46.7 t ADT: 595

MERRITT BOULEVARD

Fair

Over: BREAD AND CHEESE CREEK

0.31 MI S. OF MD 208, Baltimore, MD

Built 1958 Load: 46.7 t ADT: 45,947

FULTON AVENUE

Fair

Over: I-170

0.1 MI S OF FRANKLIN ST, Baltimore city, MD

Built 1975 Load: 46.7 t ADT: 6,501

I-83 NB

Fair

Over: MTA LIGHT RAIL YARD

STA. 150-158, Baltimore city, MD

Built 1959 Load: 46.7 t ADT: 117,171

POORHOUSE ROAD

Fair

Over: MILL RUN

1 MI SE RIPLEY ROAD, Charles, MD

Built 1996 Load: 46.7 t ADT: 3,475

COON CLUB ROAD

Fair

Over: EAST BRANCH PATAPSCO RIV

0.15 MI E OF HOUCK RD, Carroll, MD

Built 1964 Load: 46.7 t ADT: 2,650

MORSE ROAD

Fair

Over: EAST BRANCH/WINTERS RUN

0.3 MILES NE OF MD 23, Harford, MD

Built 1997 Load: 46.7 t ADT: 1,045

WOODLAND ROAD

Fair

Over: BRANCH OF LITTLE PATUXEN

0.01 MI N MD RTE 108, Howard, MD

Built 1935 Load: 46.7 t ADT: 3,512

RICAUDS BRANCH RD

Fair

Over: WEST FORK LANGFORD CREEK

0.1 MI E SANDY BOTTOM RD, Kent, MD

Built 1991 Load: 46.7 t ADT: 281

LITTLE FALLS PARKW

Fair

Over: WILLET BRANCH

0.1 MI N DORSET AVE, Montgomery, MD

Built 1963 Load: 46.7 t ADT: 17,283

RIVER ROAD

Fair

Over: TRIB TO PAINT BRANCH

.1 MI S OF PAINT BR PKWY, Prince George's, MD

Built 1995 Load: 46.7 t ADT: 13,540

HICKORY SCHOOL ROA

Fair

Over: SEMPLE RUN

.5 MI W. OF I70, Washington, MD

Built 1996 Load: 46.7 t ADT: 1,077

WHITESBURG ROAD

Fair

Over: PUSEY BRANCH

0.25 MI N OF SAND ROAD, Worcester, MD

Built 1994 Load: 46.7 t ADT: 230

IS 95 NB

Fair

Over: GUSRYAN ST

500 FT W OF DUNDALK AVE, Baltimore city, MD

Built 1976 Load: 46.7 t ADT: 69,003

E. NECK ISLAND RD.

Fair

Over: EASTERN NECK NARROWS

EASTERN NECK ISLAND ROAD, Kent, MD

Built 1995 Load: 47.2 t ADT: 200

IS 68 RAMP F(2)

Fair

Over: CENTRE ST QUEEN CITY DR

0.52 MI E OF US 48H, Allegany, MD

Built 1968 Load: 47.2 t ADT: 1,412

MD 832

Fair

Over: BIG PIPE CREEK

1.02 MILE NORTH OF MD 140, Carroll, MD

Built 1929 Load: 47.2 t ADT: 1,662

MD 335

Fair

Over: BR OF HONGA RIVER

1.76 MILE SOUTH OF MD 336, Dorchester, MD

Built 1991 Load: 47.2 t ADT: 1,001

MD 335

Fair

Over: GREAT MARSH CREEK

2.15 MILE SOUTH OF MD 336, Dorchester, MD

Built 1991 Load: 47.2 t ADT: 871

IS 70 EBR

Fair

Over: US 15

0.37 MILE EAST OF MD 180, Frederick, MD

Built 1968 Load: 47.2 t ADT: 89,580

MD 38

Fair

Over: N BRANCH POTOMAC RIVER

ON WEST VIRGINIA LINE, Garrett, MD

Built 1954 Load: 47.2 t ADT: 971

MD 462

Fair

Over: CARSINS RUN

0.66 MILE NORTH OF MD 22, Harford, MD

Built 1978 Load: 47.2 t ADT: 6,960

BETHANY LANE

Fair

Over: IS 70

1.61 MI W OF US 29, Howard, MD

Built 1968 Load: 47.2 t ADT: 4,669

MD 119

Fair

Over: SHADY BRANCH

0.3 M S OF SAM EIG HWY, Montgomery, MD

Built 1988 Load: 47.2 t ADT: 19,551

US 1 ALT SB

Fair

Over: NORTHEAST BRANCH

0.45 MILE NORTH OF MD 450, Prince George's, MD

Built 1955 Load: 47.2 t ADT: 13,462

US 301 SB

Fair

Over: MD 5

0.30 MILE SOUTH OF MD 381, Prince George's, MD

Built 1950 Load: 47.2 t ADT: 30,642

IS 95 IL

Fair

Over: MD 193

0.34 MILE NORTH OF MD 295, Prince George's, MD

Built 1963 Load: 47.2 t ADT: 220,640

Showing 2,051-2,100 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.