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

POST ROAD

Good

Over: PRINCIPIO CREEK

1.32 MILES S OF MD 274, Cecil, MD

Built 1992 Load: 36.7 t ADT: 1,431

SOUTHAMPTON ROAD

Good

Over: BYNUM RUN

0.6 MILES W OF MD 543, Harford, MD

Built 2010 Load: 36.7 t ADT: 3,876

FOUNDRY STREET

Good

Over: LITTLE PATUXENT RIVER

0.03 MI N OF GORMAN RD, Howard, MD

Built 1975 Load: 36.7 t ADT: 5,511

IS 95

Good

Over: WASH. BLVD & GWYNNS FALL

I95 AT WASH BLVD, Baltimore city, MD

Built 1977 Load: 36.7 t ADT: 111,945

I-95

Good

Over: CARSINS RUN

Milepost M85.6, Harford, MD

Built 1963 Load: 36.7 t ADT: 100,386

MD 200 WB

Good

Over: I-95

0.9 mi S of Van Dusen Rd, Prince George's, MD

Built 2011 Load: 36.7 t ADT: 11,521

FROG EYE ROAD

Good

Over: ISRAEL CREEK

0.1M W OF ROHRERSVILLE RD, Washington, MD

Built 2021 Load: 36.8 t ADT: 100

IS 695

Good

Over: EDMONDSON AVENUE

0.48 MILE NORTH OF MD 144, Baltimore, MD

Built 2021 Load: 36.9 t ADT: 180,306

MD 261

Good

Over: FISHING CREEK

0.3 MI S OF MD 260, Calvert, MD

Built 2019 Load: 36.9 t ADT: 18,067

CEDARVILLE ROAD

Good

Over: MATTAWOMAN CREEK

1.14 MI EAST OF US 301, Prince George's, MD

Built 2017 Load: 36.9 t ADT: 4,441

OLD JOPPA ROAD

Good

Over: I-95

Milepost M73.4, Harford, MD

Built 2019 Load: 36.9 t ADT: 28,266

MD 140

Good

Over: IS 695

0.6 M S OF MT WILSON LANE, Baltimore, MD

Built 2002 Load: 37.2 t ADT: 42,450

IS 795 NBR

Good

Over: COCKEYS MILL ROAD

0.65 MILE SOUTH OF MD 140, Baltimore, MD

Built 1985 Load: 37.2 t ADT: 55,810

IS 795 SBR

Good

Over: COCKEYS MILL ROAD

0.65 MILE SOUTH OF MD 140, Baltimore, MD

Built 1985 Load: 37.2 t ADT: 55,810

MD 506

Good

Over: BATTLE CREEK

1.77 MI E OF SIXES ROAD, Calvert, MD

Built 2003 Load: 37.2 t ADT: 1,997

MD 30

Good

Over: INDIAN RUN

0.645 M S OF MD 482, Carroll, MD

Built 2007 Load: 37.2 t ADT: 9,200

MD 335

Good

Over: WALLACE CREEK

0.47 MILE SOUTH OF MD 336, Dorchester, MD

Built 2008 Load: 37.2 t ADT: 871

MD 495

Good

Over: N FORK CRABTREE CREEK

3.28 MILES N OF MD 135, Garrett, MD

Built 1987 Load: 37.2 t ADT: 1,652

MD 732R

Good

Over: MD 32

0.17 M S OF GUILFORD ROAD, Howard, MD

Built 1991 Load: 37.2 t ADT: 15,761

MD 198 EB

Good

Over: LAFAYETTE AVE CSX TRANS

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

Built 1984 Load: 37.2 t ADT: 21,349

MD 198 WB

Good

Over: LAFAYETTE AVE CSX TRANS

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

Built 1944 Load: 37.2 t ADT: 20,511

MD 197

Good

Over: IS 595

1.43 MILES S OF MD 450, Prince George's, MD

Built 1990 Load: 37.2 t ADT: 31,802

IS 595 CD RD E-W

Good

Over: MD 3 & RAMP S-W(1)

MD 3 US 301 IS 595 INT, Prince George's, MD

Built 1992 Load: 37.2 t ADT: 14,577

IS 68

Good

Over: LITTLE TONOLOWAY CREEK

1.46 MILES E OF MD 144WB, Washington, MD

Built 1965 Load: 37.2 t ADT: 19,000

COOL SPRINGS ROAD

Good

Over: TRIB TO NORTHEAST RIVER

0.5 MI N OF MD 7, Cecil, MD

Built 2007 Load: 37.2 t ADT: 561

BILL MOXLEY ROAD

Good

Over: BRANCH OF BUSH CREEK

500 SOUTH OF WESTWIND DR, Frederick, MD

Built 1973 Load: 37.2 t ADT: 1,212

ALDINO-STEPNEY RD

Good

Over: CARSINS RUN

0.5 MILES N OF MD 22, Harford, MD

Built 2000 Load: 37.2 t ADT: 439

MD 304

Good

Over: US 301

2.5 MI E OF MD 213, Queen Anne's, MD

Built 2017 Load: 37.3 t ADT: 4,525

CAMPBELL BOULEVARD

Good

Over: TRIBUTARY TO WHITE MARSH

0.5 Miles East of US 40, Baltimore, MD

Built 2015 Load: 37.3 t ADT: 4,393

RAPHEL ROAD

Good

Over: I-95

Milepost M70.7, Baltimore, MD

Built 2023 Load: 37.3 t ADT: 5,392

MD 35

Good

Over: BRANCH OF WILLS CREEK

0.17 MI S OF PA LINE, Allegany, MD

Built 2008 Load: 37.6 t ADT: 5,001

MD 43

Good

Over: WHITE MARSH RUN

0.197 MILE EAST OF US 40, Baltimore, MD

Built 2004 Load: 37.6 t ADT: 13,012

MD 23

Good

Over: MORSE ROAD

1.03 MILES S OF MD 165, Harford, MD

Built 1961 Load: 37.6 t ADT: 11,892

GREAT STAR DRIVE

Good

Over: MD 32

1.15 MI E OF MD 108, Howard, MD

Built 1995 Load: 37.6 t ADT: 3,513

MD 32

Good

Over: RIV RD CSX PATAPSCO RIV

ON CARROLL COUNTY LINE, Howard, MD

Built 2003 Load: 37.6 t ADT: 19,240

PAINTERS MILL ROAD

Good

Over: GWYNN FALLS

0.5 MI SW REISTERSTOWN RD, Baltimore, MD

Built 1954 Load: 37.6 t ADT: 22,643

ARTERS MILL ROAD

Good

Over: SILVER RUN

0.47 MI N OF MAYBERRY RD, Carroll, MD

Built 1986 Load: 37.6 t ADT: 245

CARROLLTON ROAD

Good

Over: WEST BRANCH PATAPSCO RIV

0.09 MI W OF DUTROW ROAD, Carroll, MD

Built 1978 Load: 37.6 t ADT: 1,697

GAPLAND ROAD

Good

Over: BROAD RUN

0.85 MI WEST OF MD 383, Frederick, MD

Built 2007 Load: 37.6 t ADT: 960

CHRISTOPHERS CROSS

Good

Over: TRIBUTARY OF TUSCARORA C

WEST OF THOMAS JOHNSON DR, Frederick, MD

Built 2004 Load: 37.6 t ADT: 4,896

WESTERNPORT ROAD

Good

Over: SAVAGE RIVER

0.02 MI W SAVAGE RIVER RD, Garrett, MD

Built 2003 Load: 37.6 t ADT: 138

STEPHENS ROAD

Good

Over: HAMMOND BRANCH

0.3 M N WHISKEY BOTTOM RD, Howard, MD

Built 2021 Load: 37.6 t ADT: 3,350

SUMMIT AVENUE

Good

Over: CSXT RAILROAD

0.14 MILE NORTH OF MD 547, Montgomery, MD

Built 1996 Load: 37.6 t ADT: 9,746

WASHINGTONIAN BLVD

Good

Over: SAM EIG HIGHWAY

0.5 MI WEST OF I-270, Montgomery, MD

Built 1998 Load: 37.6 t ADT: 9,998

MOLLY BERRY ROAD

Good

Over: ROCK CREEK

0.27 M N OF BDN NAYLOR RD, Prince George's, MD

Built 2005 Load: 37.6 t ADT: 927

MD 200 (ICC) EB

Good

Over: NORTH BRANCH ROCK CREEK

1.51 MI W OF MD 97, Montgomery, MD

Built 2010 Load: 37.6 t ADT: 31,652

VIRGINIA MANOR RD

Good

Over: MD 200 (ICC)

1.1 MI. E. OF I-95, Prince George's, MD

Built 2013 Load: 37.6 t ADT: 7,318

IS 95/495

Good

Over: MD 214

1.78 MILES S OF MD 202, Prince George's, MD

Built 2020 Load: 37.9 t ADT: 224,775

IS 95/495

Good

Over: MD 214

1.78 MILES S OF MD 202, Prince George's, MD

Built 2020 Load: 37.9 t ADT: 224,775

MECHANICS VALLEY R

Good

Over: LITTLE NORTHEAST CREEK

0.41 MI N OF US 40, Cecil, MD

Built 2016 Load: 37.9 t ADT: 5,436

Showing 3,801-3,850 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.