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

CROUSE MILL ROAD

Fair

Over: TUCKAHOE CREEK

0.9 MI E. OF MD 481, Queen Anne's, MD

Built 1993 Load: 68.5 t ADT: 577

US 220

Fair

Over: MILL RUN

0.9 MILE SOUTH OF MD 830B, Allegany, MD

Built 1900 Load: 68.9 t ADT: 7,111

MD 295 NBR

Fair

Over: PATAPSCO RIVER

ON BALT CO LINE, Anne Arundel, MD

Built 1949 Load: 68.9 t ADT: 80,822

MD 295 SBR

Fair

Over: PATAPSCO RIVER

ON BALT CO LINE, Anne Arundel, MD

Built 1949 Load: 68.9 t ADT: 80,822

US 40

Fair

Over: LITTLE CATOCTIN CREEK

0.2 M E OF HARMONY ROAD, Frederick, MD

Built 1936 Load: 68.9 t ADT: 5,522

MD 144A

Fair

Over: BR OF MIDDLE PATUXENT RI

1.5 MILES WEST OF US 32, Howard, MD

Built 1982 Load: 68.9 t ADT: 3,451

CORBETT ROAD

Fair

Over: GUNPOWDER FALLS

1.0 MI NW OF CARROLL ROAD, Baltimore, MD

Built 1945 Load: 68.9 t ADT: 1,149

CALVERT STREET

Fair

Over: I-83 AND AMTRAK

0.06 MI E OF ST PAUL ST, Baltimore city, MD

Built 1920 Load: 68.9 t ADT: 4,644

DAYSVILLE ROAD

Fair

Over: ISRAEL CREEK

0.5 MI E OF MD RTE 194, Frederick, MD

Built 1990 Load: 68.9 t ADT: 1,392

CRUM ROAD

Fair

Over: ISRAEL CREEK

0.5 MI S OF WALKERSVILLE, Frederick, MD

Built 1994 Load: 68.9 t ADT: 3,121

COLEMAN ROAD

Fair

Over: RED LION BRANCH

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

Built 1994 Load: 68.9 t ADT: 120

MD RTE 152

Fair

Over: I-95

Milepost M74.3, Harford, MD

Built 1962 Load: 68.9 t ADT: 27,371

WATERBURY ROAD

Fair

Over: IS 97

AT IS 97, Anne Arundel, MD

Built 1987 Load: 69.4 t ADT: 999

IS 595 RAMP F

Fair

Over: MD 665 SBR IS 595

0.79 M E OF BR NO 0216000, Anne Arundel, MD

Built 1991 Load: 69.4 t ADT: 15,006

MD 410

Fair

Over: NORTHWEST BRANCH

0.68 MILE EAST OF MD 212, Prince George's, MD

Built 1955 Load: 69.4 t ADT: 24,602

MD 3 SBR

Fair

Over: MD 997D

0.41 MI N OF IS 97, Anne Arundel, MD

Built 1989 Load: 69.8 t ADT: 52,720

MD 700

Fair

Over: US 40

1.89 MI N OF MD 150, Baltimore, MD

Built 1941 Load: 69.8 t ADT: 8,661

US 15

Fair

Over: MARYLAND MIDLAND RR

0.26 MILE SOUTH OF MD 550, Frederick, MD

Built 1957 Load: 69.8 t ADT: 28,321

IS 495 OL

Fair

Over: IS 270Y

0.26 MILE EAST OF MD 191, Montgomery, MD

Built 1996 Load: 69.8 t ADT: 115,850

IS 95 SB

Fair

Over: LITTLE PAINT BRANCH

0.23 MILE NORTH OF MD 212, Prince George's, MD

Built 1971 Load: 69.8 t ADT: 183,230

TOWN CREEK ROAD

Fair

Over: FLINTSTONE CREEK

0.02 MI S OF MD 144, Allegany, MD

Built 1992 Load: 69.8 t ADT: 310

UNDERWOOD ROAD

Fair

Over: YOUGHIOGHENY RIVER

0.5 M NW INT UNDERWOOD RD, Garrett, MD

Built 1965 Load: 69.8 t ADT: 1,138

FRANKFURST AVE

Fair

Over: STREAM

Milepost M7.8, Baltimore city, MD

Built 1957 Load: 69.8 t ADT: 50,800

MD 838 WYE ISLAND

Fair

Over: WYE NARROWS

WYE ISLAND, Queen Anne's, MD

Built 1990 Load: 69.8 t ADT: 108

MD 45

Fair

Over: NCR TRAIL

0.12 MI N OF FREDERICK RD, Baltimore, MD

Built 1930 Load: 70.3 t ADT: 5,350

IS 595 EB

Fair

Over: FOLLY BRANCH

1.11 MILES WEST OF MD 193, Prince George's, MD

Built 1955 Load: 70.3 t ADT: 113,590

IS 95/IS 495 RMP 7

Fair

Over: IS 95/ IS 495 & RAMP 5

2.86 MILE NORTH OF MD 414, Prince George's, MD

Built 2008 Load: 70.3 t ADT: 22,464

STAFFORD ROAD

Fair

Over: ROCK RUN

0.1 MI NW OF ROCK RUN RD, Harford, MD

Built 1991 Load: 70.3 t ADT: 287

MD 32 WB

Fair

Over: LITTLE PATUXENT RIVER

0.23 M S OF SHAKER DRIVE, Howard, MD

Built 1981 Load: 70.7 t ADT: 81,712

MD 328

Fair

Over: BEAVERDAM BRANCH

3.44 MI W OF CAROLINE CO, Talbot, MD

Built 1944 Load: 70.7 t ADT: 10,230

LONGNECKER ROAD

Fair

Over: SLADE RUN

0.74 MI N OF MD 128, Baltimore, MD

Built 1920 Load: 70.7 t ADT: 315

JOHN HYDE ROAD

Fair

Over: TURKEYFOOT RUN

0.04 MI N OF SMITH RD, Carroll, MD

Built 1978 Load: 70.7 t ADT: 362

LANGFORD ROAD

Fair

Over: MILL POND

0.01 MI W OF BRICES MILL, Kent, MD

Built 1989 Load: 70.7 t ADT: 265

LANGFORD ROAD

Fair

Over: EAST FORK LANGFORD CREEK

0.01 MI E OF BRICES MILL, Kent, MD

Built 1989 Load: 70.7 t ADT: 265

DECATUR ROAD

Fair

Over: DORSEY CREEK

0.5 KM SE OF RT. 450, Anne Arundel, MD

Built 1983 Load: 71.1 t ADT: 4,400

MD 64

Fair

Over: ANTIETAM CREEK

0.36 M E OF ANTIETAM DR, Washington, MD

Built 1933 Load: 71.2 t ADT: 12,022

ERDMAN AVENUE

Fair

Over: PULASKI HIGHWAY

0.2 MI N OF IS 895, Baltimore city, MD

Built 1985 Load: 71.2 t ADT: 18,700

MORGAN ROAD

Fair

Over: SOUTH BRANCH PATAPSCO RI

ON HOWARD COUNTY LINE, Carroll, MD

Built 1976 Load: 71.2 t ADT: 470

SEVEN LOCKS ROAD

Fair

Over: CABIN JOHN CREEK

.1 MI S OF DEMOCRACY BLVD, Montgomery, MD

Built 1960 Load: 71.2 t ADT: 30,260

MIDDLEBRIDGE DRIVE

Fair

Over: BEL PRE CREEK

0.1 MI EAST OF MD-182, Montgomery, MD

Built 1983 Load: 71.2 t ADT: 315

MD 100 EBR

Fair

Over: MD 100 RAMP 2

I-97 MD 100 INTERCHANGE, Anne Arundel, MD

Built 1996 Load: 71.7 t ADT: 34,826

MD 835K (NESBIT RD

Fair

Over: US 50/US 301

0.26 MILE NORTH OF MD 18B, Queen Anne's, MD

Built 1991 Load: 71.7 t ADT: 199

TANEY ROAD

Fair

Over: WESTERN RUN

0.1 MI N CROSS COUNTRY BL, Baltimore city, MD

Built 1973 Load: 71.7 t ADT: 6,868

SOUTH HAMPTON DRIV

Fair

Over: TRIBUTARY TO MATTAWOMAN

1 mile w. Indianhead Hwy, Charles, MD

Built 1998 Load: 71.7 t ADT: 3,000

RITCHIE ROAD

Fair

Over: SOUTHWEST BRANCH

0.47 MI SOUTH OF MD 214, Prince George's, MD

Built 1980 Load: 71.7 t ADT: 21,862

SHEPPARDS CROSSING

Fair

Over: POCOMOKE RIVER

0.75 MI E BETHEL RD, Wicomico, MD

Built 1994 Load: 71.7 t ADT: 370

MD 144AE

Fair

Over: TOWN CREEK

0.38 MI E OF US 40AF, Allegany, MD

Built 1926 Load: 72.1 t ADT: 50

MD 100 WBR

Fair

Over: MD 100 RAMP 2

I-97 MD 100 INTERCHANGE, Anne Arundel, MD

Built 1996 Load: 72.1 t ADT: 34,826

DISNEY ROAD

Fair

Over: SEVERN RUN

1.06 MI N OF MD 175, Anne Arundel, MD

Built 1974 Load: 72.1 t ADT: 5,842

FOREST PARK AVENUE

Fair

Over: GWYNNS FALLS

0.8 MI N WINDSOR MILL RD, Baltimore city, MD

Built 2006 Load: 72.1 t ADT: 19,678

Showing 2,951-3,000 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.