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

COLD BOTTOM RD

Good

Over: IS 83

@ IS 83, Baltimore, MD

Built 1955 Load: 49.0 t ADT: 500

MD 25

Good

Over: IS 695

0.79 MI S OF JOPPA ROAD, Baltimore, MD

Built 1996 Load: 49.0 t ADT: 9,121

IS 795 RAMP 7

Good

Over: MD 940

0.10 MI W OF IS 795, Baltimore, MD

Built 1985 Load: 49.0 t ADT: 14,234

IS 795 SBR

Good

Over: FRANKLIN BOULEVARD

0.58 MI S OF BR NO 033340, Baltimore, MD

Built 1985 Load: 49.0 t ADT: 55,810

MD 43

Good

Over: AMTRAK

0.156 MILE WEST OF MD 150, Baltimore, MD

Built 2006 Load: 49.0 t ADT: 13,012

MD 213

Good

Over: AMTRAK

0.13 MILE SOUTH OF MD 545, Cecil, MD

Built 1989 Load: 49.0 t ADT: 21,818

MD 355

Good

Over: GREAT SENECA CREEK

1.32 MILES N OF MD 124, Montgomery, MD

Built 2000 Load: 49.0 t ADT: 31,050

IS 95/495 IL LOCAL

Good

Over: IS 95/IS 495 RAMP Q

2.0 MILE WEST OF MD 210, Anne Arundel, MD

Built 2006 Load: 49.0 t ADT: 141,180

ISLAND STREET

Good

Over: JACKSON RUN

0.03 MI W OF RAILROAD AVE, Allegany, MD

Built 1940 Load: 49.0 t ADT: 337

BROCK BRIDGE ROAD

Good

Over: DORSEY RUN

1.2 MILES WEST OF MD 175, Anne Arundel, MD

Built 1991 Load: 49.0 t ADT: 3,203

COSNER ROAD

Good

Over: EAST BRANCH/WINTERS RUN

0.3 MI E OF PHILLIPS M RD, Harford, MD

Built 1991 Load: 49.0 t ADT: 81

SOUTH TOLLGATE ROA

Good

Over: PLUMTREE RUN

0.38 MI. N. PLUMTREE RD., Harford, MD

Built 2019 Load: 49.0 t ADT: 225

HOWARD CHAPEL RD

Good

Over: PATUXENT RIVER

1.7 MI NORTH OF MD 650, Montgomery, MD

Built 2002 Load: 49.0 t ADT: 563

WILSON BOULEVARD

Good

Over: PINE STREET

0.05 MI E of Route 11, Washington, MD

Built 1983 Load: 49.0 t ADT: 16,448

SANDYFIELD ROAD

Good

Over: NINEPIN BRANCH

0.76 MI S OF MD 374, Worcester, MD

Built 2002 Load: 49.0 t ADT: 90

KENWOOD AVENUE

Good

Over: I-95

1.7 MI N OF BALT. CITY LI, Baltimore, MD

Built 2008 Load: 49.0 t ADT: 13,403

MD200 Ramp I-A

Good

Over: I95 NB-CD

MD200EB Ramp I-A to I95NB, Prince George's, MD

Built 2011 Load: 49.0 t ADT: 12,656

MD 272

Good

Over: AMTRAK

0.32 MILE SOUTH OF US 40, Cecil, MD

Built 2020 Load: 49.2 t ADT: 11,950

MD 648E

Good

Over: IS 695

0.17 MILE NORTH OF MD 169, Anne Arundel, MD

Built 1989 Load: 49.4 t ADT: 16,400

MD 176B(WRIGHT RD)

Good

Over: MD 295

1 MI SW OF 295 176 JCT, Anne Arundel, MD

Built 1991 Load: 49.4 t ADT: 730

MD 198 (MAPES RD)

Good

Over: MD 32

0.77 M E OF BR NO 0217700, Anne Arundel, MD

Built 1990 Load: 49.4 t ADT: 27,190

LINGANORE ROAD

Good

Over: IS 70

@ IS 270, Frederick, MD

Built 1985 Load: 49.4 t ADT: 550

MD 187

Good

Over: IS 270

0.404 M N/DEMOCRACY BLVD, Montgomery, MD

Built 2002 Load: 49.4 t ADT: 45,401

MD 929A & MD 929B

Good

Over: US 29

0.17 MILE EAST OF MD 929C, Montgomery, MD

Built 2006 Load: 49.4 t ADT: 36,072

IS 295 RAMP F

Good

Over: IS 95/495 RPS B.T Q R H

0.8 M S OF WASH DCLINE, Prince George's, MD

Built 2003 Load: 49.4 t ADT: 78,272

IS 95/IS 495 RMP T

Good

Over: IS 95/IS 495 RMPS K P X

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

Built 2004 Load: 49.4 t ADT: 191,981

NEW VAIL ST

Good

Over: Canton RR

0.0 MI. S of Keith Ave, Baltimore city, MD

Built 1990 Load: 49.4 t ADT: 1,183

COOLEY MILL ROAD

Good

Over: ROCK RUN

0.7 MI SE OF ROCK RUN RD, Harford, MD

Built 1997 Load: 49.4 t ADT: 200

DRIVEWAY OFF AINTR

Good

Over: WATTS BRANCH

WOOTTONS MILL PARK, Montgomery, MD

Built 2009 Load: 49.4 t ADT: 20

CONTEE ROAD

Good

Over: CSX RAILROAD

0.1 MI EAST OF US 1, Prince George's, MD

Built 1997 Load: 49.4 t ADT: 22,202

HALFWAY BOULEVARD

Good

Over: TRIBUTARY OF CONOCOCHEAG

0.6 MI WEST OF I-81, Washington, MD

Built 2005 Load: 49.4 t ADT: 4,256

SOUTH POINTE DRIVE

Good

Over: TRIBUTARY OF ANTIETAM CR

.3 MI N OF E OAK RIDGE DR, Washington, MD

Built 2000 Load: 49.4 t ADT: 3,885

LONGMEAD CROSSING

Good

Over: MD 200 (ICC)

3.61 MI WEST OF MD650, Montgomery, MD

Built 2010 Load: 49.4 t ADT: 6,790

MD 144

Good

Over: IS 695

0.05 MI E OF WADE AVENUE, Baltimore, MD

Built 2013 Load: 49.6 t ADT: 19,200

MD 135

Good

Over: GEORGES CREEK

0.02 MI E OF MD 36, Allegany, MD

Built 1963 Load: 49.9 t ADT: 6,642

MD 100N (WRIGHT RD

Good

Over: MD 100

1 MI E OF MD 295, Anne Arundel, MD

Built 1995 Load: 49.9 t ADT: 730

IS 795 SBR

Good

Over: MD 940

0.62 M N OF BR NO 0336000, Baltimore, MD

Built 1985 Load: 49.9 t ADT: 68,761

MD 100

Good

Over: EXECUTIVE PARK DRIVE

0.91 MILE WEST OF MD 104, Howard, MD

Built 1998 Load: 49.9 t ADT: 79,752

MD 100

Good

Over: CSX RR OCONNOR RD

0.24 M W OF AA CO LINE, Howard, MD

Built 1996 Load: 49.9 t ADT: 83,402

MD 100

Good

Over: CSX RR OCONNOR ROAD

0.24 M W OF AA CO LINE, Howard, MD

Built 1996 Load: 49.9 t ADT: 83,402

MD 121

Good

Over: IS 270

0.64 MILE SOUTH OF MD 355, Montgomery, MD

Built 1997 Load: 49.9 t ADT: 13,714

DUSTIN ROAD

Good

Over: US 29

0.05 M E OF COLUMBIA PIKE, Montgomery, MD

Built 2003 Load: 49.9 t ADT: 999

IS 595 RAMP A

Good

Over: BALD HILL BRANCH

1 MI E OF JCT IS 95, Prince George's, MD

Built 1955 Load: 49.9 t ADT: 144,254

MARYLAND 63

Good

Over: CSX TRANS.

1.08 MILES NORTH OF US 11, Washington, MD

Built 1959 Load: 49.9 t ADT: 12,600

IS70/US40 RP A

Good

Over: IS 70 EBR & RAMP B

0.3 M E OF BR NO 2109200, Washington, MD

Built 1989 Load: 49.9 t ADT: 26,700

DOLFIELD BOULEVARD

Good

Over: RED RUN BRANCH

0.9 MI S OF RED RUN BLVD, Baltimore, MD

Built 2010 Load: 49.9 t ADT: 22,984

SHEPHERDS MILL RD

Good

Over: LITTLE PIPE CREEK

JUST E OF UNION BRIDGE, Carroll, MD

Built 2023 Load: 49.9 t ADT: 613

COXEY BROWN ROAD

Good

Over: LITTLE CATOCTIN CREEK

AT HARMONY RD INT, Frederick, MD

Built 1983 Load: 49.9 t ADT: 517

CHESTNUT HILL ROAD

Good

Over: STOUT BOTTLE BRANCH

0.6 MILES NW OF MD 543, Harford, MD

Built 2020 Load: 49.9 t ADT: 681

PARK VALLEY ROAD

Good

Over: SLIGO CREEK

AT SLIGO CR PKWY, Montgomery, MD

Built 2019 Load: 49.9 t ADT: 1,126

Showing 4,301-4,350 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.