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

US 1

Fair

Over: SULPHUR SPRING ROAD

0.33 MI N OF IS 95, Baltimore, MD

Built 1947 Load: 45.4 t ADT: 11,542

BEAVERDAM ROAD

Fair

Over: IS 83

AT IS 83, Baltimore, MD

Built 1973 Load: 45.4 t ADT: 5,584

IS 695 IL

Fair

Over: EDMONDSON AVENUE

0.48 MILE NORTH OF MD 144, Baltimore, MD

Built 1957 Load: 45.4 t ADT: 180,306

IS 695

Fair

Over: US 40

1.23 MILE NORTH OF MD 144, Baltimore, MD

Built 1958 Load: 45.4 t ADT: 188,860

IS 70 EBR

Fair

Over: RAMPS C & G

0.54 M E OF ROLLING ROAD, Baltimore, MD

Built 1966 Load: 45.4 t ADT: 25,300

IS 70 WBR

Fair

Over: RAMPS C & G

0.54 M E OF ROLLING ROAD, Baltimore, MD

Built 1966 Load: 45.4 t ADT: 25,300

IS 95 SBR

Fair

Over: IS 695

0.85 MILE NORTH OF US 1, Baltimore, MD

Built 1969 Load: 45.4 t ADT: 91,742

IS 695 RAMP B

Fair

Over: IS 83 RAMP C

0.40 MI S OF MD 139, Baltimore, MD

Built 1973 Load: 45.4 t ADT: 11,150

MD 213

Fair

Over: LONG BRANCH

0.17 MILE NORTH OF MD 285, Cecil, MD

Built 1949 Load: 45.4 t ADT: 14,551

MD 6

Fair

Over: NANJEMOY CREEK

1.4 MILES WEST OF MD 425, Charles, MD

Built 1922 Load: 45.4 t ADT: 1,972

MD 234

Fair

Over: ALLENS FRESH RUN

1.0 MILE EAST OF US 301, Charles, MD

Built 1933 Load: 45.4 t ADT: 6,741

MD 180

Fair

Over: LITTLE CATOCTIN CREEK

1.31 MILES WEST OF MD 79, Frederick, MD

Built 1912 Load: 45.4 t ADT: 1,300

US 15 SBR

Fair

Over: WEST SEVENTH ST

1.28 MILES NORTH OF US 40, Frederick, MD

Built 1968 Load: 45.4 t ADT: 83,230

IS 70 EBR

Fair

Over: MD 180

0.02 MILE EAST OF US 15, Frederick, MD

Built 1968 Load: 45.4 t ADT: 94,760

IS 70 RAMP A

Fair

Over: MD 180

0.2 MILE EAST OF US 15, Frederick, MD

Built 1968 Load: 45.4 t ADT: 12,984

MD 180 WESTBOUND

Fair

Over: US 15

0.49 MILE EAST OF IS 70, Frederick, MD

Built 1968 Load: 45.4 t ADT: 27,750

IS 68 EB

Fair

Over: WATER ST YOUGHIOGHENY R

0.12 MILE WEST OF MD 742, Garrett, MD

Built 1974 Load: 45.4 t ADT: 12,240

US 219

Fair

Over: CSX TRANS. LITTLE YOUGH

.26 MILE SOUTH OF US 219A, Garrett, MD

Built 1959 Load: 45.4 t ADT: 6,372

IS 68 EB

Fair

Over: MD 42

0.33 MILE WEST OF MD 742, Garrett, MD

Built 1974 Load: 45.4 t ADT: 12,240

MD 216

Fair

Over: PATUXENT RIVER

ON PRINCE GEORGES CO LINE, Howard, MD

Built 1960 Load: 45.4 t ADT: 24,762

IS 95 SB

Fair

Over: STANSFIELD RD

0.50 MI N OF PG CO, Howard, MD

Built 1970 Load: 45.4 t ADT: 186,040

IS 495

Fair

Over: SEVEN LOCKS RD

0.59 MILE EAST OF MD 190, Montgomery, MD

Built 1962 Load: 45.4 t ADT: 214,005

MD 191

Fair

Over: IS 495 & THOMAS BRANCH

1.9 MILES NORTH OF MD 190, Montgomery, MD

Built 1962 Load: 45.4 t ADT: 10,370

MD 212A

Fair

Over: CSX TRANS.

0.08 MILE NORTH OF US 1, Prince George's, MD

Built 1937 Load: 45.4 t ADT: 19,631

SHELBOURNE ROAD

Fair

Over: WEST BRANCH HERBERT RUN

0.5 MI N SULPHUR SPRING R, Baltimore, MD

Built 1920 Load: 45.4 t ADT: 3,710

OLD ELK NECK ROAD

Fair

Over: PLUM CREEK

4 MI NW CHESAPEAKE CITY, Cecil, MD

Built 1992 Load: 45.4 t ADT: 777

RAGAN ROAD

Fair

Over: BRANCH OF OCTORARO CREEK

0.04 MI E OF JOHNSON RD, Cecil, MD

Built 1945 Load: 45.4 t ADT: 802

ROOP ROAD

Fair

Over: PINEY CREEK

.7 M SE OF BULLFROG RD, Carroll, MD

Built 1912 Load: 45.4 t ADT: 317

HUGHES ROAD

Fair

Over: BEAVER RUN

0.23 MI WEST OF MD 91, Carroll, MD

Built 1976 Load: 45.4 t ADT: 330

MACPHAIL ROAD

Fair

Over: BYNUM RUN

1.6 MILES E OF MD 924, Harford, MD

Built 1974 Load: 45.4 t ADT: 3,095

BRIDGE DRIVE

Fair

Over: JOPPATOWNE CANAL

0.05 MI S OF TOWNE CNT DR, Harford, MD

Built 1975 Load: 45.4 t ADT: 1,342

SHADY GROVE ROAD

Fair

Over: MILL CREEK

1.1 MI SOUTH OF MD 115, Montgomery, MD

Built 1975 Load: 45.4 t ADT: 67,323

DECOVERLY DRIVE

Fair

Over: TRIBUTARY TO MUDDY BRANC

0.7 MILES NORTH OF MD 28, Montgomery, MD

Built 2006 Load: 45.4 t ADT: 5,804

MONROE STREET

Fair

Over: TRUCK STREET

0.16 MI NORTH OF MD 28, Montgomery, MD

Built 1996 Load: 45.4 t ADT: 3,663

THRIFT ROAD

Fair

Over: TRIB TO PISCATAWAY CREEK

0.11 MI N OF WINDBROOK DR, Prince George's, MD

Built 1989 Load: 45.4 t ADT: 9,577

IS 95 NB

Fair

Over: B&O RR

Milepost M52.0, Baltimore city, MD

Built 1982 Load: 45.4 t ADT: 91,311

IS 68

Fair

Over: MD 144

0.57 MILE WEST OF US 220, Allegany, MD

Built 1967 Load: 45.8 t ADT: 26,680

US 50/301

Fair

Over: BOULTERS WAY

0.07 MILE WEST OF MD 2, Anne Arundel, MD

Built 1953 Load: 45.8 t ADT: 121,160

BAY DALE DRIVE

Fair

Over: US 50/US 301

0.05 M N OF FURGUSON ROAD, Anne Arundel, MD

Built 1991 Load: 45.8 t ADT: 14,550

MD 25

Fair

Over: BLACKROCK RUN

1.46 MILE SOUTH OF MD 137, Baltimore, MD

Built 1995 Load: 45.8 t ADT: 3,551

IS 695

Fair

Over: GREENSPRING AVENUE

1.37 MILE SOUTH OF MD 25, Baltimore, MD

Built 1961 Load: 45.8 t ADT: 176,700

US 1

Fair

Over: OCTORARO CREEK

.54 MILE NORTH OF MD 591A, Cecil, MD

Built 1933 Load: 45.8 t ADT: 11,282

IS 270

Fair

Over: MONOCACY RIVER

1.32 MILE SOUTH OF MD 85, Frederick, MD

Built 1950 Load: 45.8 t ADT: 80,340

MD 175 WB & RMP B

Fair

Over: LITTLE PATUXENT RIVER

0.27 MILE NORTH OF US 29, Howard, MD

Built 1970 Load: 45.8 t ADT: 47,121

MD 185

Fair

Over: CSX TRANS.

0.10 MILE NORTH OF MD 547, Montgomery, MD

Built 1957 Load: 45.8 t ADT: 42,252

IS 495

Fair

Over: SLIGO CREEK PARKWAY

0.604 MILE EAST OF MD 97, Montgomery, MD

Built 1959 Load: 45.8 t ADT: 232,010

IS 495

Fair

Over: MD 650

0.28 MI W OF PG CO, Montgomery, MD

Built 1963 Load: 45.8 t ADT: 242,500

IS 595

Fair

Over: CSXT & COLLINGTON BRANCH

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

Built 1992 Load: 45.8 t ADT: 113,590

US 50

Fair

Over: US 50PA

0.52 MILE WEST OF IS 95, Prince George's, MD

Built 1961 Load: 45.8 t ADT: 91,392

IS 95/495

Fair

Over: MD 450

1.05 MILES N OF IS 595, Prince George's, MD

Built 1963 Load: 45.8 t ADT: 204,147

Showing 1,951-2,000 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.