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

PRINCE EDWARD DR

Good

Over: UNNAMED TRIBUTARY

.05 MI N OF BILLINGSLY RD, Charles, MD

Built 1996 Load: 33.6 t ADT: 558

KUMP STATION ROAD

Good

Over: SILVER RUN

0.14 MI W OF BABYLON RD, Carroll, MD

Built 1982 Load: 33.6 t ADT: 179

SANDY HOOK ROAD

Good

Over: DEER CREEK

1.5 MIL NE OF ALLIBONE RD, Harford, MD

Built 1977 Load: 33.6 t ADT: 190

COLUMBIA ROAD

Good

Over: LITTLE PATUXENT RIVER

0.5 MI N OF L. PATUX PKWY, Howard, MD

Built 1987 Load: 33.6 t ADT: 6,934

MD 355

Good

Over: BENNETT CREEK

1.06 MILES SOUTH OF MD 80, Frederick, MD

Built 2022 Load: 34.0 t ADT: 9,500

MD 216

Good

Over: US 29

.16 M N OF ICE CRYSTAL DR, Howard, MD

Built 2001 Load: 34.0 t ADT: 17,672

MD 355

Good

Over: LITTLE BENNETT CREEK

0.10 MILE SOUTH OF MD 109, Montgomery, MD

Built 1925 Load: 34.0 t ADT: 7,540

MD 725

Good

Over: FEDERAL SPRING BRANCH

0.62 MILE WEST OF MD 717, Prince George's, MD

Built 2011 Load: 34.0 t ADT: 13,032

MD 331

Good

Over: CHOPTANK RIVER

ON CAROLINE CO LINE, Talbot, MD

Built 2018 Load: 34.0 t ADT: 13,600

IS 70 RAMP B

Good

Over: BEAVER CREEK

0.08 MI W OF MD 66, Washington, MD

Built 1968 Load: 34.0 t ADT: 7,850

US 113

Good

Over: MIDDLE BRANCH

0.784 MILE N OF MD 589, Worcester, MD

Built 2001 Load: 34.0 t ADT: 14,192

VALLEY MILL ROAD

Good

Over: LITTLE FALLS

0.59 MI N OF WALKER RD, Baltimore, MD

Built 1975 Load: 34.0 t ADT: 210

OWINGS MILLS BOULE

Good

Over: HORSEHEAD BRANCH

2.7 MI SW OF MD 140, Baltimore, MD

Built 2012 Load: 34.0 t ADT: 41,030

CAPE HORN ROAD NOR

Good

Over: UNNAMED STREAM

INT. W/ HARVEY GUMMEL RD, Carroll, MD

Built 2019 Load: 34.0 t ADT: 1,457

BIG WOODS ROAD

Good

Over: BENNETT CREEK

0.35 MI N OF MD RTE 355, Frederick, MD

Built 2007 Load: 34.0 t ADT: 2,120

JERUSALEM ROAD

Good

Over: DRY SENECA CREEK

0.37 MILES EAST OF MD 109, Montgomery, MD

Built 2013 Load: 34.0 t ADT: 1,050

GREENBELT METRO DR

Good

Over: INDIAN CREEK

500FT NW OF CHERRYWOOD LA, Prince George's, MD

Built 1971 Load: 34.0 t ADT: 2,416

I-695 OL

Good

Over: MD 10 Ramp B

0.6 MI W OF E ORDNACE RD, Anne Arundel, MD

Built 1981 Load: 34.0 t ADT: 18,596

MD 200 (ICC)

Good

Over: ROCK CREEK

3.30 MI W OF MD 97, Montgomery, MD

Built 2010 Load: 34.0 t ADT: 62,479

TRIDELPHIA ROAD

Good

Over: MD 32

4.30 MI W OF MD 144, Howard, MD

Built 2020 Load: 34.3 t ADT: 7,200

KREIGBAUM ROAD

Good

Over: JENNINGS RUN

0.04 MI W OF MD 36, Allegany, MD

Built 2021 Load: 34.3 t ADT: 699

HESS ROAD

Good

Over: LITTLE GUNPOWDER FALLS

1.8 MI E OLD YORK ROAD, Baltimore, MD

Built 1978 Load: 34.3 t ADT: 2,699

BARON RD

Good

Over: CSX RAILROAD

0.16 MI N OF NAZARENE RD, Cecil, MD

Built 2015 Load: 34.3 t ADT: 535

SURRATTS ROAD

Good

Over: PISCATAWAY CREEK

1.73 MILES EAST OF MD 5, Prince George's, MD

Built 1975 Load: 34.3 t ADT: 2,406

MD 119

Good

Over: MUDDY BRANCH

0.9 MI SE OF JCT SR 124, Montgomery, MD

Built 1988 Load: 34.5 t ADT: 34,401

MD 119

Good

Over: SHADY BRANCH

0.13 M N OF SAM EIG HWY, Montgomery, MD

Built 1988 Load: 34.5 t ADT: 39,581

IS 595 RAMP A(5)

Good

Over: IS 95 IS 595 RAMP D&E

0.1 MI W OF IS 595 US 50, Prince George's, MD

Built 1992 Load: 34.5 t ADT: 20,543

OPOSSUMTOWN PIKE

Good

Over: LITTLE TUSCARORA CREEK

0.2 MI W OF WILLOWBRK RD, Frederick, MD

Built 1975 Load: 34.5 t ADT: 1,783

MD 272

Good

Over: I-95

Milepost M99.7, Cecil, MD

Built 1991 Load: 34.5 t ADT: 23,120

CROSBY ROAD

Good

Over: IS 695

0.6 MI S OF IS 70, Baltimore, MD

Built 2018 Load: 34.7 t ADT: 12,625

BALL ROAD

Good

Over: PETER PAN RUN

1.7 MI W OF IJAMSVILLE RD, Frederick, MD

Built 1970 Load: 34.7 t ADT: 906

BOYERS MILL ROAD

Good

Over: LAKE LINGANORE

1.8 MI S OF GAS HOUSE PK, Frederick, MD

Built 2017 Load: 34.7 t ADT: 5,776

MARBLE QUARRY ROAD

Good

Over: LITTLE ANTIETAM CREEK

0.4 MI NW OF MD RTE 67, Washington, MD

Built 1920 Load: 34.7 t ADT: 178

US 40 WB

Good

Over: AMTRAK

0.31 MILE EAST OF MD 279, Cecil, MD

Built 1992 Load: 34.9 t ADT: 18,638

MD 560

Good

Over: BRANCH OF GLADE RUN

2.85 MILES NORTH OF US 50, Garrett, MD

Built 1950 Load: 34.9 t ADT: 1,914

US 219

Good

Over: SOUTH BRANCH BEAR CREEK

.44 MILE NORTH OF MD 826P, Garrett, MD

Built 1950 Load: 34.9 t ADT: 3,900

MD 382

Good

Over: ROCK BRANCH

0.48 MI S OF TANYARD RD, Prince George's, MD

Built 1999 Load: 34.9 t ADT: 4,500

MD 33

Good

Over: KNAPPS NARROWS

0.91 M W OF BENDERS LANE, Talbot, MD

Built 1998 Load: 34.9 t ADT: 2,201

GREENSPRING AVENUE

Good

Over: SLAUGHTERHOUSE BRANCH

0.3 MI N BALTO BELTWAY, Baltimore, MD

Built 1984 Load: 34.9 t ADT: 5,193

BRANDENBURG HOLLOW

Good

Over: MIDDLE CREEK

0.7 MI N OF STOTTLEMEYER, Frederick, MD

Built 1976 Load: 34.9 t ADT: 483

WETIPQUIN ROAD

Good

Over: WETIPQUIN CREEK

0.5 MI NW DEEP BRANCH RD, Wicomico, MD

Built 2009 Load: 34.9 t ADT: 170

I-895 NB

Good

Over: MOORES RUN

Milepoint M14.68, Baltimore city, MD

Built 2008 Load: 34.9 t ADT: 32,084

IS 695

Good

Over: MILFORD MILL ROAD

0.74 MILE NORTH OF MD 26, Baltimore, MD

Built 2017 Load: 35.0 t ADT: 189,237

MD 404

Good

Over: HIGHWAY DRAINAGE

0.41 M E OF CONNELLY RD, Talbot, MD

Built 2017 Load: 35.0 t ADT: 19,600

ORLEANS ROAD

Good

Over: FIFTEEN MILE CREEK

0.01 MI. E. OF APPEL RD, Allegany, MD

Built 2019 Load: 35.3 t ADT: 297

MD 36

Good

Over: BRANCH OF GEORGES CREEK

0.21 MILE NORTH OF MD 939, Allegany, MD

Built 1981 Load: 35.4 t ADT: 5,740

MD 43

Good

Over: BIRD RIVER ROAD

0.939 MILE EAST OF US 40, Baltimore, MD

Built 2005 Load: 35.4 t ADT: 13,012

MD 195

Good

Over: SLIGO CR PKWY & SLIGO CR

0.5 MILE NORTH OF MD 410, Montgomery, MD

Built 1932 Load: 35.4 t ADT: 7,500

MD 119

Good

Over: LONG DRAUGHT BRANCH

1.66 MILE NORTH OF MD 124, Montgomery, MD

Built 1990 Load: 35.4 t ADT: 10,344

COUDON BOULEVARD

Good

Over: MILL CREEK

2 MI SOUTH OF US 40, Cecil, MD

Built 2003 Load: 35.4 t ADT: 1,890

Showing 3,701-3,750 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.