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

KNIGHTS BRIDGE RD

Good

Over: HAMMONDS BRANCH

0.1 MI S LOCH LEVEN CT, Howard, MD

Built 1992 Load: 35.4 t ADT: 940

I695E RAMP TO I95N

Good

Over: I95/ I695 (INTERCHANGE)

I695 I95 Interchange, Baltimore, MD

Built 2008 Load: 35.4 t ADT: 21,567

MD 200 EB

Good

Over: I-95

MD200 Pass over I95, Prince George's, MD

Built 2011 Load: 35.4 t ADT: 8,815

US 1

Good

Over: CSX TRANSPORTATION

0.78 MI N OF IS 895, Baltimore, MD

Built 2021 Load: 35.6 t ADT: 23,100

IS 695

Good

Over: BENSON AVENUE

0.18 MI S OF US 1, Baltimore, MD

Built 2004 Load: 35.6 t ADT: 177,072

MD 254

Good

Over: NEALE SOUND

1.09 MILE SOUTH OF MD 257, Charles, MD

Built 2019 Load: 35.6 t ADT: 1,900

ANNAPOLIS ROAD

Good

Over: MD 295 B/W PARKWAY

0.3 MI N OF PATAPSCO AVE, Baltimore city, MD

Built 2022 Load: 35.6 t ADT: 16,650

SOUTH CENTRAL AVEN

Good

Over: PATAPSCO RIVER

BETWEEN LANCASTER & DOCK, Baltimore city, MD

Built 2019 Load: 35.6 t ADT: 3,081

IS 68 EBR

Good

Over: MD 144 ELK LICK RUN

0.86 M E OF BR NO 0115500, Allegany, MD

Built 1990 Load: 35.8 t ADT: 21,600

MD 24 NBR

Good

Over: US 40

0.35 MILE NORTH OF MD 755, Harford, MD

Built 1995 Load: 35.8 t ADT: 20,242

US 13 NB

Good

Over: NORFOLK SOUTHERN RR

0.39 MILE NORTH OF MD 346, Wicomico, MD

Built 1972 Load: 35.8 t ADT: 36,390

DAIRY ROAD

Good

Over: TRIBUTARY TO OWL BRANCH

0.45 MI W OF IS 83, Baltimore, MD

Built 1963 Load: 35.8 t ADT: 350

POTEE STREET

Good

Over: PATAPSCO RIVER

0.7 MI S HANOVER ST, Baltimore city, MD

Built 2005 Load: 35.8 t ADT: 16,254

CALVERT ROAD

Good

Over: NORTHEAST CREEK

0.95 MI N OF MD 274, Cecil, MD

Built 1994 Load: 35.8 t ADT: 1,342

GUILFORD ROAD

Good

Over: MIDDLE PATUXENT RIVER

0.04 MI N BERGER RD, Howard, MD

Built 1982 Load: 35.8 t ADT: 8,192

BOWIE ROAD

Good

Over: BEAR BRANCH

0.2 MI EAST OF US 1 NB, Prince George's, MD

Built 1972 Load: 35.8 t ADT: 14,590

WOODMORE ROAD

Good

Over: TRIBUTARY TO NORTHEAST B

1.43 MILES EAST OF MD193, Prince George's, MD

Built 2007 Load: 35.8 t ADT: 14,565

UPSHUR STREET

Good

Over: STREAM

AT 53RD PLACE, Prince George's, MD

Built 1958 Load: 35.8 t ADT: 1,291

DUTCHMANS LANE

Good

Over: WINDMILL BRANCH

850 FEET EAST OF US 50, Talbot, MD

Built 2010 Load: 35.8 t ADT: 5,911

JOPPA ROAD

Good

Over: I-95

Milepost M68.5, Baltimore, MD

Built 2005 Load: 35.8 t ADT: 3,799

IS 95 RAMP L

Good

Over: RAMP L TO ODONNELL ST

MILEPOST 57.5, Baltimore city, MD

Built 1984 Load: 35.8 t ADT: 12,092

Old Columbia Pike

Good

Over: MD-200 & Ramps SW & EN

0.18 Mi. West of US 29, Montgomery, MD

Built 2011 Load: 35.8 t ADT: 9,633

POTOMAC HOLLOW ROA

Good

Over: MOORES RUN

0.48 MI S OF MD 935, Allegany, MD

Built 2014 Load: 36.0 t ADT: 268

LOCH RAVEN DRIVE

Good

Over: LOCH RAVEN RESERVOIR

0.9 MI N PROVIDENCE RD, Baltimore, MD

Built 1988 Load: 36.0 t ADT: 4,990

NOBLE ROAD

Good

Over: MARSHYHOPE CREEK

0.3 MI NW OF DELAWARE LIN, Caroline, MD

Built 2016 Load: 36.0 t ADT: 1,428

CEDAR LANE

Good

Over: ROCK CREEK

AT BEACH DRIVE, Montgomery, MD

Built 1959 Load: 36.0 t ADT: 13,424

Duvall Bridge Road

Good

Over: Duvall Mill Millrace

Central/NorthTractBoundry, Anne Arundel, MD

Built 2017 Load: 36.3 t ADT: 5

MD 32 EBR

Good

Over: MD 175

1.54 MILE WEST OF MD 170, Anne Arundel, MD

Built 1989 Load: 36.3 t ADT: 50,192

MD 32 WBR

Good

Over: MD 175

1.54 MI W OF MD 170, Anne Arundel, MD

Built 1989 Load: 36.3 t ADT: 50,192

IS 695 RAMP 8

Good

Over: LEEDS AVE & HERBERT RUN

0.92 MI N OF I-95, Baltimore, MD

Built 2016 Load: 36.3 t ADT: 3,975

IS 795 RAMP 1

Good

Over: MD 940

0.68 MI S OF MD 940, Baltimore, MD

Built 1986 Load: 36.3 t ADT: 18,960

MD 43

Good

Over: WINDLASS RUN

1.587 MILE EAST OF US 40, Baltimore, MD

Built 2005 Load: 36.3 t ADT: 13,012

MD 287

Good

Over: CHOPTANK RIVER

1.07 MI W OF DELAWARE LN, Caroline, MD

Built 2011 Load: 36.3 t ADT: 2,490

MD 228 EB

Good

Over: MATTAWOMAN CREEK

PRINCE GEORGES CO LINE, Charles, MD

Built 1995 Load: 36.3 t ADT: 39,800

MD 228 WB

Good

Over: MATTAWOMAN CREEK

PRINCE GEORGES CO LINE, Charles, MD

Built 1995 Load: 36.3 t ADT: 39,800

ENSOR ROAD

Good

Over: THIRD MINE BRANCH

1.85 MILES SW OF MD 439, Baltimore, MD

Built 2016 Load: 36.3 t ADT: 75

ARRINGTON ROAD

Good

Over: PINEY RUN

AT MARRIOTTSVILLE ROAD, Carroll, MD

Built 1958 Load: 36.3 t ADT: 260

ACCESS ROAD

Good

Over: GEORGES RUN

0.1 MILE EAST OF MD 30, Carroll, MD

Built 2009 Load: 36.3 t ADT: 3,415

MONOCACY BOULEVARD

Good

Over: MONOCACY RIVER

0.4 MILES S OF MD 26, Frederick, MD

Built 2000 Load: 36.3 t ADT: 11,825

MONTEVIDEO ROAD

Good

Over: DRY SENECA CREEK

1.1 M N OF RIVER RD, Montgomery, MD

Built 1910 Load: 36.3 t ADT: 150

SUDLERSVILLE CEMET

Good

Over: UNICORN BRANCH

1.1 MI NORTH OF MD 300, Queen Anne's, MD

Built 1988 Load: 36.3 t ADT: 332

GARRETTS MILL ROAD

Good

Over: ISRAEL CREEK

0.25 MI W OF MD RTE 67, Washington, MD

Built 2019 Load: 36.3 t ADT: 590

MARSHANE ROAD

Good

Over: TRIBUTARY TO NORRIS RUN

0.5 MI E OF NICODEMUS RD, Baltimore, MD

Built 2015 Load: 36.6 t ADT: 200

MD 47

Good

Over: NORTH BRANCH

0.518 MI N OF MD 831F, Allegany, MD

Built 2005 Load: 36.7 t ADT: 2,042

MD 5 NBR

Good

Over: MD 231

1.85 M N OF ST MARYS CO, Charles, MD

Built 2006 Load: 36.7 t ADT: 17,551

MD 5 SBR

Good

Over: MD 231

1.85 M N OF ST MARYS CO, Charles, MD

Built 2006 Load: 36.7 t ADT: 17,551

MD 208

Good

Over: CSX TRANSPORTATION RR

0.18 MILE SOUTH OF US 1, Prince George's, MD

Built 1955 Load: 36.7 t ADT: 10,461

MD 450

Good

Over: CSX TRANSPORTATION

0.16 MILE WEST OF MD 197, Prince George's, MD

Built 2003 Load: 36.7 t ADT: 27,040

MD 242

Good

Over: ST CLEMENTS CREEK

0.52 MILE NORTH OF MD 234, St. Mary's, MD

Built 2000 Load: 36.7 t ADT: 2,371

CLIFTON AVENUE

Good

Over: WINDSOR MILL ROAD

0.6 MI E OF HILTON ST, Baltimore city, MD

Built 2000 Load: 36.7 t ADT: 25,000

Showing 3,751-3,800 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.