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 439

Good

Over: IS 83

0.25 MI E OF MD 45, Baltimore, MD

Built 2002 Load: 74.4 t ADT: 7,650

MD 943

Good

Over: GOODWIN RUN

0.28 MILE EAST OF IS 83, Baltimore, MD

Built 1993 Load: 74.4 t ADT: 25,470

MD 943

Good

Over: GOODWIN RUN

0.28 MILE EAST OF IS 83, Baltimore, MD

Built 1993 Load: 74.4 t ADT: 25,470

SPRING AVENUE

Good

Over: TRIBUTARY TO REDHOUSE CR

0.2 MI NW OF MD 7, Baltimore, MD

Built 2005 Load: 74.4 t ADT: 115

ROCKLAND ROAD

Good

Over: LITTLE PIPE CREEK

0.01 MI N OF ROOPS MIL RD, Carroll, MD

Built 1997 Load: 74.4 t ADT: 89

LAWNDALE ROAD

Good

Over: NORTH BRANCH PATAPSCO RI

0.5 MI. W. EMORY ROAD, Carroll, MD

Built 1995 Load: 74.4 t ADT: 1,582

SERENADE LANE

Good

Over: TRIBUTARY TO PISCATAWAY

0.2 MI E OF SUMMIT CK DR, Prince George's, MD

Built 1998 Load: 74.4 t ADT: 1,192

BEN OAKS DRIVE

Good

Over: PERSIMMON CREEK

0.4 M NE OF MD 235, St. Mary's, MD

Built 2009 Load: 74.4 t ADT: 978

INDIAN SPRINGS RD

Good

Over: LANES RUN

1.3 MI N OF US RTE 40, Washington, MD

Built 1940 Load: 74.4 t ADT: 295

MD 355

Good

Over: RELOCATED RANDOLPH ROAD

2.5 MI N. OF I-495, Montgomery, MD

Built 2009 Load: 74.5 t ADT: 60,000

MD 118

Good

Over: CSX TRANSPORTATION

0.98 MILE N OF MD 117, Montgomery, MD

Built 1998 Load: 74.8 t ADT: 25,451

OPESSA STREET

Good

Over: SEVEN SPRINGS RUN

1.15 MILES E OF MD 51, Allegany, MD

Built 2009 Load: 74.8 t ADT: 682

MOUNT VISTA ROAD

Good

Over: TRIBUTARY TO GUNPOWDER F

1.28 MI E OF US RTE 1, Baltimore, MD

Built 1984 Load: 74.8 t ADT: 1,713

CHARLES STREET

Good

Over: I-83

0.3 MI S OF NORTH AVE, Baltimore city, MD

Built 2003 Load: 74.8 t ADT: 20,975

KIRKS MILL LANE

Good

Over: NORTHEAST CREEK

0.71 MI N OF MD 274, Cecil, MD

Built 2003 Load: 74.8 t ADT: 546

AVERY ROAD

Good

Over: ROCK CREEK

0.75 MI N OF JCT SR 28, Montgomery, MD

Built 1994 Load: 74.8 t ADT: 3,894

US 219

Good

Over: DEEP CREEK LAKE

3.88 MILE SOUTH OF MD 42, Garrett, MD

Built 1987 Load: 75.3 t ADT: 10,016

MD 201 SB

Good

Over: AMTRAK SER RD BEAVERDAM

0.16 MILE SOUTH OF US 50, Prince George's, MD

Built 2008 Load: 75.3 t ADT: 132,060

WATER STREET ROAD

Good

Over: ISRAEL CREEK

0.6 MI S OF DAYSVILLE RD, Frederick, MD

Built 2006 Load: 75.3 t ADT: 1,100

BRIERHILL DRIVE

Good

Over: BYNUM RUN

0.4 MILES S OF MD 22, Harford, MD

Built 1987 Load: 75.3 t ADT: 9,278

MD 202

Good

Over: COLLINGTON BRANCH

0.03 MILE NORTH OF MD 725, Prince George's, MD

Built 1992 Load: 75.7 t ADT: 17,642

NORBECK RD & NORWO

Good

Over: NORTHWEST BRANCH

0.7 MILES EAST OF MD 182, Montgomery, MD

Built 2002 Load: 75.7 t ADT: 20,520

RITCHIE MARLBORO R

Good

Over: CABIN BRANCH

2.91 MILES S OF IS 495, Prince George's, MD

Built 2009 Load: 75.7 t ADT: 15,750

US 220

Good

Over: MASON ROAD

0.82 MILE NORTH OF I-68, Allegany, MD

Built 1999 Load: 76.2 t ADT: 3,841

MD 295 SB RAMP B

Good

Over: MD 295 NBR

0.84 MI S OF HOWARD CO, Anne Arundel, MD

Built 1990 Load: 76.2 t ADT: 10,897

MD 100 EBR

Good

Over: MD 170

1.09 MILES M OF MD 100P, Anne Arundel, MD

Built 1995 Load: 76.2 t ADT: 68,782

MD 100 WBR

Good

Over: MD 170

1.09 MILES M OF MD 100P, Anne Arundel, MD

Built 1995 Load: 76.2 t ADT: 68,782

MD 7

Good

Over: WHITEMARSH RUN

0.2 M E OF CAMPBELL BLVD, Baltimore, MD

Built 2002 Load: 76.2 t ADT: 16,450

IS 83

Good

Over: OREGON BRANCH

0.41 MI N OF BEAVERDAM RD, Baltimore, MD

Built 1949 Load: 76.2 t ADT: 85,051

NEW CUT ROAD

Good

Over: SEVERN RUN

2.4 MILES NORTH OF MD 32, Anne Arundel, MD

Built 2001 Load: 76.2 t ADT: 10,126

HOLLY ROAD

Good

Over: FORGE BRANCH

0.4 MI NE OF GREENSBORO, Caroline, MD

Built 1996 Load: 76.2 t ADT: 468

OLD HAGERSTOWN RD

Good

Over: LITTLE CATOCTIN CREEK

0.25 MI N OF ALT. 40, Frederick, MD

Built 1994 Load: 76.2 t ADT: 938

FATHER HURLEY BOUL

Good

Over: CSXT RAILROAD

NORTH OF MD 118, Montgomery, MD

Built 2010 Load: 76.2 t ADT: 588

I-695 IL

Good

Over: PENINSULA EXPRESSWAY

1.2 MI W OF MD 151, Baltimore, MD

Built 1998 Load: 76.2 t ADT: 10,682

IS 195

Good

Over: MD 170

1.07 MI S OF MD 295, Anne Arundel, MD

Built 1998 Load: 76.6 t ADT: 56,601

MD 140

Good

Over: PINEY CREEK

0.85 MI N OF TANEYTOWN, Carroll, MD

Built 1997 Load: 76.6 t ADT: 5,340

IS 95/IS 495 RMP 7

Good

Over: IS 95/IS 495 RAMP 9

@ MD 5 INTERCHANGE, Prince George's, MD

Built 2008 Load: 76.6 t ADT: 21,741

KELOX ROAD

Good

Over: TRIBUTARY TO GWYNNS FALL

0.1 MI NE of SR 26, Baltimore, MD

Built 2010 Load: 76.6 t ADT: 812

LARK BROWN ROAD

Good

Over: DORSEY RUN

0.04 MI W OF MD RTE 108, Howard, MD

Built 1991 Load: 76.6 t ADT: 6,274

HOMEWOOD ROAD

Good

Over: MIDDLE PATUXENT RIVER

1 MI W OF MD RTE 108, Howard, MD

Built 2000 Load: 76.6 t ADT: 5,182

GOSHEN ROAD

Good

Over: CABIN BRANCH

0.2 MI N OF CENTERWAY RD, Montgomery, MD

Built 2004 Load: 76.6 t ADT: 25,587

IS 695

Good

Over: MD 372

0.96 MILE NORTH OF US 1, Baltimore, MD

Built 2004 Load: 77.1 t ADT: 193,762

MD 550

Good

Over: OWENS CREEK

0.82 MILE NORTH OF US 15, Frederick, MD

Built 1996 Load: 77.1 t ADT: 7,221

NEW DESIGN ROAD

Good

Over: ARUNDEL BRANCH

.25 Mi. N. of Corporate D, Frederick, MD

Built 1998 Load: 77.1 t ADT: 17,000

ROXBURY ROAD

Good

Over: DORSEY BRANCH

0.5 MI E OF MD RTE 97, Howard, MD

Built 2002 Load: 77.1 t ADT: 1,079

US 301 NB

Good

Over: MD 290

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

Built 1955 Load: 77.5 t ADT: 5,500

FRANCIS AVENUE

Good

Over: US RT. 1 AMTRAK POTOMA

0.05 MI E OF CARVILLE AVE, Baltimore, MD

Built 1997 Load: 77.5 t ADT: 7,405

US 40 SCN

Good

Over: SNIB HOLLOW RUN

0.43 M E OF BR NO 0103700, Allegany, MD

Built 2003 Load: 78.0 t ADT: 281

MD 133

Good

Over: SLAUGHTERHOUSE BRANCH

0.11 MI W OF MD 25, Baltimore, MD

Built 1990 Load: 78.0 t ADT: 6,191

LOCH RAVEN DRIVE

Good

Over: DULANEY VALLEY BRANCH

3 MI N CROMWELL BRDG RD, Baltimore city, MD

Built 2011 Load: 78.0 t ADT: 10,100

Showing 4,901-4,950 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.