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

SCHUCKS PARK ROAD

Good

Over: BROAD RUN

0.2 MI. E. OF SCHUCKS RD, Harford, MD

Built 2012 Load: 63.9 t ADT: 306

Kerby Hill Road

Good

Over: Carey Branch

1.5 MILE SOUTH OF I-495, Prince George's, MD

Built 2021 Load: 64.2 t ADT: 6,525

HARFORD CREAMERY R

Good

Over: TRIB / LITTLE DEER CREEK

0.5 MILES N OF LEMON RD, Harford, MD

Built 2015 Load: 64.2 t ADT: 500

MD 36

Good

Over: JENNINGS RUN

0.12 MI N OF MD 35, Allegany, MD

Built 1957 Load: 64.4 t ADT: 8,670

FREELAND ROAD

Good

Over: IS 83

0.13 MI E OF MD 45, Baltimore, MD

Built 2007 Load: 64.4 t ADT: 1,024

DEMOCRACY BLVD

Good

Over: IS 270Y

@ IS 270Y, Montgomery, MD

Built 2003 Load: 64.4 t ADT: 25,601

IS 68 WB

Good

Over: RICE ROAD

1.71 MILES EAST OF MD 903, Washington, MD

Built 1985 Load: 64.4 t ADT: 19,950

PHOENIX ROAD

Good

Over: TRIBUTARY TO GUNPOWDER F

0.5 MI. NE OF SR 45, Baltimore, MD

Built 2002 Load: 64.4 t ADT: 1,607

JASPER RILEY ROAD

Good

Over: TROUT RUN

0.9 MILES EAST OF US 219, Garrett, MD

Built 2018 Load: 64.4 t ADT: 26

PARK CENTRAL RD

Good

Over: STILL CREEK

1.2 MI FROM GREENBELT RD, Prince George's, MD

Built 2022 Load: 64.4 t ADT: 30

FIRST STREET

Good

Over: ROCK CREEK TRIBUTARY

0.07 MILE WEST OF MD28, Montgomery, MD

Built 2017 Load: 64.8 t ADT: 3,496

IS 795 RAMP 1

Good

Over: IS 795 RAMP 7 & 9

@ MD 940, Baltimore, MD

Built 1985 Load: 64.9 t ADT: 18,960

THURSTON ROAD

Good

Over: LITTLE BENNETT CREEK

1.8 MI S OF PETERS RD, Frederick, MD

Built 1986 Load: 64.9 t ADT: 478

SCHUSTER ROAD

Good

Over: WEST BRANCH/ WINTERS RUN

0.2 MILES E OF MD 146, Harford, MD

Built 1999 Load: 64.9 t ADT: 4,200

I-695 RAMP to I95S

Good

Over: STEMMERS RUN

I-95/I-695 Interchange, Baltimore, MD

Built 2008 Load: 64.9 t ADT: 23,331

JOPPA ROAD

Good

Over: IS 83/IS 695 & RAMP 7

0.54 MILE EAST OF MD 25, Baltimore, MD

Built 2005 Load: 65.3 t ADT: 7,031

IS 83 RAMP 6

Good

Over: BRANCH OF BEAVERDAM RUN

RP FR PADONIA TO I 83 SB, Baltimore, MD

Built 1983 Load: 65.3 t ADT: 10,000

MD 144FA

Good

Over: CARROLL CREEK

0.02 M E OF BENTZ ST, Frederick, MD

Built 1994 Load: 65.3 t ADT: 6,869

IS 270 NB

Good

Over: MD 109 LITTLE BENNETT C

0.22 MI S OF FREDERICK CO, Montgomery, MD

Built 1950 Load: 65.3 t ADT: 87,230

MD 481

Good

Over: BLOCKSTON BRANCH

2.55 MILES S OF MD 304, Queen Anne's, MD

Built 2002 Load: 65.3 t ADT: 862

WARD ROAD

Good

Over: TRIBUTARY TO HALL CREEK

1.10 MI EAST OF MD 4, Calvert, MD

Built 1997 Load: 65.3 t ADT: 924

RED TOAD ROAD

Good

Over: PRINCIPIO CREEK

0.06 MI N OF PRINCIPIO RD, Cecil, MD

Built 2008 Load: 65.3 t ADT: 1,060

RIDGE ROAD

Good

Over: BROAD CREEK

2.2 MILES SW OF MD 136, Harford, MD

Built 1979 Load: 65.3 t ADT: 169

WHITES FERRY ROAD

Good

Over: BROAD RUN TRIBUTARY

1 MI W OF ELGIN ROAD, Montgomery, MD

Built 2014 Load: 65.3 t ADT: 1,836

NORBECK ROAD

Good

Over: NURSERY RUN

0.98 MILES EAST OF MD 182, Montgomery, MD

Built 2002 Load: 65.3 t ADT: 18,960

Ramp WN to US29 NB

Good

Over: Ramp NB to Briggs Chaney

0.8 Mi S Briggs Chaney Rd, Montgomery, MD

Built 2011 Load: 65.3 t ADT: 309

FORT AVE

Good

Over: CSX

FORT AVENUE OVER CSX RR, Baltimore city, MD

Built 2012 Load: 65.4 t ADT: 12,359

WATKINS MILL ROAD

Good

Over: GREAT SENECA CREEK

.6 MI SE OF BLUNT ROAD, Montgomery, MD

Built 1990 Load: 65.7 t ADT: 12,760

MD 100Q (QUEENSTOW

Good

Over: MD 100

1 MI E OF MD 170, Anne Arundel, MD

Built 1995 Load: 65.8 t ADT: 1,211

MD 213

Good

Over: CSX TRANSPORTATION

0.16 MILE NORTH OF IS 95, Cecil, MD

Built 1991 Load: 65.8 t ADT: 8,241

MD 140

Good

Over: MONOCACY RIVER

ON CARROLL CO LINE, Frederick, MD

Built 2013 Load: 65.8 t ADT: 4,801

MD 104

Good

Over: MD 100

0.12 MILE NORTH OF MD 108, Howard, MD

Built 1998 Load: 65.8 t ADT: 12,400

MUDDY BRANCH RD WB

Good

Over: IS 270 & NB C-D ROAD

0.85 MI N OF IS 370, Montgomery, MD

Built 1989 Load: 65.8 t ADT: 14,642

GAS HOUSE PIKE

Good

Over: BENS BRANCH

0.5 MI WEST OF MD 75, Frederick, MD

Built 1982 Load: 65.8 t ADT: 2,353

RUFFS MILL ROAD

Good

Over: TRIB / THOMAS RUN

0.8 MILES SE OF US 1, Harford, MD

Built 2011 Load: 65.8 t ADT: 1,007

THIRD LEVEL ENTRAN

Good

Over: HOURLY PARKING GARAGE

BWI HOURLY PARK GARAGE, Anne Arundel, MD

Built 1995 Load: 65.8 t ADT: 1,105

IS 370

Good

Over: OAKMONT AVENUE

0.37 MILE EAST OF MD 355, Montgomery, MD

Built 1989 Load: 66.2 t ADT: 78,741

TURKEY POINT ROAD

Good

Over: SELBY BAY

0.40 MI E OF MD 214, Anne Arundel, MD

Built 1994 Load: 66.2 t ADT: 1,123

BUSINESS PARK DRIV

Good

Over: ROLAND RUN

0.4 MI S OF TIMONIUM RD, Baltimore, MD

Built 1992 Load: 66.2 t ADT: 5,625

HARDESTY ROAD

Good

Over: FISHING CREEK

0.44 MI S OF KAPPOPOS WAY, Calvert, MD

Built 1998 Load: 66.2 t ADT: 600

W COVE POINT ROAD

Good

Over: WATERFORD BRANCH

0.1 MI. W. OF MD 2/MD 4, Calvert, MD

Built 2014 Load: 66.2 t ADT: 500

OLD BOHN ROAD

Good

Over: WOODVILLE BRANCH

AT MATTIE HAINES RD INTER, Frederick, MD

Built 1982 Load: 66.2 t ADT: 150

RED LION BRANCH RD

Good

Over: RED LION BRANCH

.84 MI. NE OF MD 290, Queen Anne's, MD

Built 1984 Load: 66.2 t ADT: 1,320

BERWYN ROAD

Good

Over: INDIAN CREEK

0.84 MI W OF MD 201, Prince George's, MD

Built 1933 Load: 66.4 t ADT: 450

IS 70 EBR

Good

Over: SPRING RIDGE PKWY

0.7 M E OF QUINN ROAD, Frederick, MD

Built 1985 Load: 66.7 t ADT: 59,922

IS 70 WBR

Good

Over: SPRING RIDGE PKWY

0.7 M E OF QUINN ROAD, Frederick, MD

Built 1985 Load: 66.7 t ADT: 59,922

MD 3 RAMP S(10)

Good

Over: IS 595 RAMPS E-N & W-N

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

Built 1992 Load: 66.7 t ADT: 1,806

PENNSY DRIVE

Good

Over: US 50 & RAMP H

0.5 MI W OF IS 95, Prince George's, MD

Built 1987 Load: 66.7 t ADT: 17,751

US 13 NB

Good

Over: MD 350

0.87 MILE S OF US 50BU, Wicomico, MD

Built 1974 Load: 66.7 t ADT: 24,770

FAWN GROVE ROAD

Good

Over: DEER CREEK

0.8 MILES N OF MD 165, Harford, MD

Built 1978 Load: 66.7 t ADT: 978

Showing 4,751-4,800 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.