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 200 (ICC) WB

Good

Over: Bonifant Road & NW Branc

2.07 Mi West of MD 650, Montgomery, MD

Built 2010 Load: 47.2 t ADT: 32,683

OTHELLO REGIONAL P

Good

Over: LOCAL STREAM

SOUTH OF MD 180, Frederick, MD

Built 2020 Load: 47.3 t ADT: 200

MD 36

Good

Over: ELKLICK RUN

0.73 M S OF BR NO 0112700, Allegany, MD

Built 2007 Load: 47.6 t ADT: 7,706

MD 36

Good

Over: GEORGES CREEK

0.10 MILE SOUTH OF MD 937, Allegany, MD

Built 1975 Load: 47.6 t ADT: 4,720

IS 695

Good

Over: INGLESIDE AVENUE

0.49 MILE SOUTH OF US 40, Baltimore, MD

Built 2021 Load: 47.6 t ADT: 180,306

MD 286

Good

Over: BACK CREEK

0.3 M E OF FERRY SLIP RD, Cecil, MD

Built 2003 Load: 47.6 t ADT: 2,311

MD 17

Good

Over: MIDDLE CREEK

0.9 MILE NORTH OF US 40, Frederick, MD

Built 2005 Load: 47.6 t ADT: 1,951

IS 495

Good

Over: MD 187 (OLD GEORGETOWN R

1.1 MILES WEST OF MD 355, Montgomery, MD

Built 2003 Load: 47.6 t ADT: 113,030

IS 270Y HOV RAMP

Good

Over: IS 270Y MEDIAN

AT WESTLAKE TERRACE, Montgomery, MD

Built 2003 Load: 47.6 t ADT: 114,000

US 29 NBR

Good

Over: MD 198

1.53 M S OF HOWARD CO LNE, Montgomery, MD

Built 2004 Load: 47.6 t ADT: 49,203

MD 210 RAMP F(11)

Good

Over: IS 95/IS 495 RAMP G

0.07 MILE NORTH OF MD 414, Prince George's, MD

Built 2005 Load: 47.6 t ADT: 12,000

Kerby Hill Rd.

Good

Over: MD 210 Service Rd.

1.5 MILE SOUTH OF I-495, Howard, MD

Built 2021 Load: 47.6 t ADT: 6,525

MD 64

Good

Over: CSX TRANSPORTATION

0.06 MILE EAST OF MD 491, Washington, MD

Built 2000 Load: 47.6 t ADT: 6,732

WHEEL ROAD

Good

Over: BYNUM RUN

1.2 MILES NE OF MD 924, Harford, MD

Built 1996 Load: 47.6 t ADT: 6,075

MACTON ROAD

Good

Over: BROAD CREEK

1.4 MILES SW OF MD 136, Harford, MD

Built 1955 Load: 47.6 t ADT: 162

MONTROSE PARKWAY

Good

Over: OLD FARM CREEK

1.0 MILE EAST OF I-270, Montgomery, MD

Built 2007 Load: 47.6 t ADT: 28,776

PRESERVE PARKWAY

Good

Over: TRIBUTARY TO CABIN JOHN

0.1M S OF WOOTTON PKWY, Montgomery, MD

Built 1999 Load: 47.6 t ADT: 2,840

Old Gunpowder Road

Good

Over: MD 200 (ICC)

0.8 MI W of I-95, Prince George's, MD

Built 2011 Load: 47.6 t ADT: 12,568

MD 97 (GEORGIA AV)

Good

Over: RANDOLPH ROAD

1.4 MI E OF MD 185, Montgomery, MD

Built 2018 Load: 48.0 t ADT: 46,114

WHITE ROCK ROAD

Good

Over: PINEY RUN

1.07 MILES S OF MD 26, Carroll, MD

Built 2017 Load: 48.0 t ADT: 4,226

DOLFIELD BOULEVARD

Good

Over: IS 795

1.1 MI N OF MD 940, Baltimore, MD

Built 1985 Load: 48.1 t ADT: 3,435

MD 17

Good

Over: MIDDLE CREEK

AT MIDDLE POINT ROAD, Frederick, MD

Built 2005 Load: 48.1 t ADT: 1,951

IS 495 RAMP K(4)

Good

Over: IS 495X NBR

0.48 MI W OF MD 190, Montgomery, MD

Built 1962 Load: 48.1 t ADT: 8,755

IS 95/IS 495 RMP G

Good

Over: IS 95/IS 495 RMPS K P X

2.0 MILES WEST OF MD 210, Prince George's, MD

Built 2004 Load: 48.1 t ADT: 191,981

US 13 SB

Good

Over: POCOMOKE RIVER

ON SOMERSET CO LINE, Worcester, MD

Built 1966 Load: 48.1 t ADT: 15,550

ELVATON ROAD

Good

Over: MARLEY CREEK

.56 MI. S. OF HOSPITAL DR, Anne Arundel, MD

Built 1985 Load: 48.1 t ADT: 4,813

MOUNT VISTA ROAD

Good

Over: SWEATHOUSE BRANCH

0.60 MI E OF MD 147, Baltimore, MD

Built 2008 Load: 48.1 t ADT: 2,290

GALLAHER ROAD

Good

Over: GRAMIES RUN

0.27 MI N OF RUSSELL RD, Cecil, MD

Built 2004 Load: 48.1 t ADT: 743

MASON BRANCH ROAD

Good

Over: MASON BRANCH

ON QUEEN ANNES CO LINE, Caroline, MD

Built 1910 Load: 48.1 t ADT: 1,277

BALLENGER CREEK PI

Good

Over: BR OF TUSCARORA CREEK

SOUTH OF CAP STINE RD INT, Frederick, MD

Built 2009 Load: 48.1 t ADT: 1,797

LENHART ROAD

Good

Over: FISHING CREEK

0.25 M N DEVILBLISS BR RD, Frederick, MD

Built 1980 Load: 48.1 t ADT: 213

MILLS ROAD

Good

Over: SHARMANS BRANCH

0.6 MI S OF BURNSIDE DR, Washington, MD

Built 2009 Load: 48.1 t ADT: 965

MORAVIA PARK DRIVE

Good

Over: I-895

I-895 Milepost M14.25, Baltimore city, MD

Built 2008 Load: 48.1 t ADT: 13,902

REDLAND ROAD

Good

Over: MD 200 (ICC)

4.38 MI W OF MD 97, Montgomery, MD

Built 2009 Load: 48.1 t ADT: 12,649

MD 200 (ICC) EB

Good

Over: Northwest Branch

1.40 Mi West of MD 650, Montgomery, MD

Built 2010 Load: 48.1 t ADT: 32,786

MD 234

Good

Over: GILBERT SWAMP RUN

0.14 M W OF ST CLAIR ROAD, Charles, MD

Built 2018 Load: 48.3 t ADT: 6,000

MD 194

Good

Over: LITTLE PIPE CREEK

ON CARROLL CO LINE, Frederick, MD

Built 1953 Load: 48.3 t ADT: 4,425

MD 32 WBR

Good

Over: MD 170

1.54 MI E OF MD 175, Anne Arundel, MD

Built 1993 Load: 48.5 t ADT: 43,672

IS 70 EBR

Good

Over: MONOCACY RIVER

0.22 M S OF BR NO 1018400, Frederick, MD

Built 1985 Load: 48.5 t ADT: 72,900

IS 70 WBR

Good

Over: MONOCACY RIVER

0.22 M S OF BR NO 1018400, Frederick, MD

Built 1985 Load: 48.5 t ADT: 72,900

MOUNT ZION ROAD

Good

Over: PINEY RUN

1.4 MI W OF MD 88, Baltimore, MD

Built 2011 Load: 48.5 t ADT: 221

DUNK FREELAND ROAD

Good

Over: LITTLE DEER CREEK

0.03 MI S OF HARRIS M RD, Baltimore, MD

Built 2007 Load: 48.5 t ADT: 100

RUSSELL ST. SB RAM

Good

Over: WALKWAY

UNDER IS 95, Baltimore city, MD

Built 2006 Load: 48.5 t ADT: 13,500

RICHARDSON ROAD

Good

Over: BEAR BRANCH

1.37 MILES N OF MD 140, Carroll, MD

Built 1991 Load: 48.5 t ADT: 312

RIVER BRIDGE ROAD

Good

Over: TIDY ISLAND CREEK

0.24 MI SW OF DE LINE, Caroline, MD

Built 2007 Load: 48.5 t ADT: 213

MOORES MILL ROAD

Good

Over: BYNUM RUN

0.3 MILES NW OF MD 22, Harford, MD

Built 2005 Load: 48.5 t ADT: 9,615

CROSS ROAD TRAIL

Good

Over: MATAPONI CREEK

0.79 M N OF NORTH KEY RD, Prince George's, MD

Built 2000 Load: 48.5 t ADT: 900

MD 404

Good

Over: BRANCH OF MILL CREEK

0.2 M W OF DULIN ROAD, Talbot, MD

Built 2017 Load: 48.6 t ADT: 16,500

LYTTONSVILLE PLACE

Good

Over: PURPLE LINE

1 MILES NORTH OF MD 410, Montgomery, MD

Built 2019 Load: 48.6 t ADT: 10,523

I-895 OFF RAMP

Good

Over: PONCA ST

Milepost M11.1, Baltimore city, MD

Built 2020 Load: 48.6 t ADT: 3,033

Showing 4,251-4,300 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.