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

MD 695 OL

Good

Over: CHESACO AVENUE

0.94 MILE SOUTH OF MD 150, Baltimore, MD

Built 1970 Load: 24.0 t ADT: 69,922

JUMPERS HOLE ROAD

Good

Over: TRIBUTARY TO MAGOTHY RIV

0.47 Mi South of JCT RT2, Anne Arundel, MD

Built 2001 Load: 24.0 t ADT: 11,903

MD 550

Good

Over: BRANCH OF FRIENDS CREEK

1.2 M S OF WASH CO LINE, Frederick, MD

Built 2004 Load: 24.5 t ADT: 1,471

GEORGIA AVENUE

Good

Over: MEETINGHOUSE BRANCH

0.2 MI. FROM W. PERIMETER, Prince George's, MD

Built 1940 Load: 24.5 t ADT: 50

VERNON ROAD

Good

Over: FIRST MINE BRANCH

0.8 MI S OF WHITE HALL RD, Baltimore, MD

Built 1988 Load: 24.9 t ADT: 666

MD 695 IL

Good

Over: CHESACO AVENUE

0.94 MILE SOUTH OF MD 150, Baltimore, MD

Built 1970 Load: 25.4 t ADT: 69,922

IS 370 & RAMP 9

Good

Over: CSX/MARC

0.56 MILE EAST OF MD 355, Montgomery, MD

Built 1989 Load: 25.4 t ADT: 78,741

ODONNELL STREET

Good

Over: NORFOLK SOUTHERN RR CAN

0.5 MI W OF I-895, Baltimore city, MD

Built 1999 Load: 25.4 t ADT: 25,970

FIFTH LEVEL EXIT R

Good

Over: LOWER LEVEL ROADWAY & RA

BWI HOURLY PARK GARAGE, Anne Arundel, MD

Built 1996 Load: 25.4 t ADT: 1,105

OLD FURNACE ROAD

Good

Over: PUSEY BRANCH

0.13 MI E OF OLD BEECH RD, Worcester, MD

Built 1994 Load: 25.8 t ADT: 370

SEMINARY ROAD

Good

Over: IS 495

0.10 MI E OF MD 192, Montgomery, MD

Built 1964 Load: 25.9 t ADT: 9,275

SANDS ROAD

Good

Over: GALLOWAY CREEK

0.1 MILE NORTH OF MD 4, Anne Arundel, MD

Built 1999 Load: 26.3 t ADT: 319

HOUCKS MILL ROAD

Good

Over: LITTLE GUNPOWDER FALLS

0.8 MI E. of OLD YORK RD, Baltimore, MD

Built 1989 Load: 26.3 t ADT: 869

DOCTOR JOHNSON ROA

Good

Over: ST. CLEMENTS CREEK

0.9 MI W OF MD RTE 242, St. Mary's, MD

Built 1975 Load: 26.3 t ADT: 880

LAUREL RUN ROAD

Good

Over: LAUREL RUN

POTOMAC GARRETT ST FOREST, Garrett, MD

Built 2001 Load: 26.3 t ADT: 5

WELLHAM ROAD

Good

Over: IS 97

AT IS 97, Anne Arundel, MD

Built 1994 Load: 26.8 t ADT: 8,400

GILLIS ROAD

Good

Over: GILLIS FALLS

2.51 MILES E OF MD 27, Carroll, MD

Built 1975 Load: 26.8 t ADT: 828

DRAWBRIDGE ROAD

Good

Over: TRANSQUAKING RIVER

1.38 MILES S OF AIREYS RD, Dorchester, MD

Built 1992 Load: 26.8 t ADT: 570

RIVER ROAD

Good

Over: NORTHEAST BRANCH

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

Built 1991 Load: 26.8 t ADT: 10,548

BLACK BRIDGE ROAD

Good

Over: BIG ELK CREEK

2 MI N OF MD RTE 273, Cecil, MD

Built 2002 Load: 26.8 t ADT: 100

MD 450

Good

Over: COLLEGE CREEK

0.3 MILE WEST OF MD 435, Anne Arundel, MD

Built 1987 Load: 27.2 t ADT: 10,364

BROCK BRIDGE ROAD

Good

Over: PATUXENT RIVER

ON THE PG COUNTY LINE, Anne Arundel, MD

Built 1966 Load: 27.2 t ADT: 5,944

McDONOGH ROAD

Good

Over: TRIBUTARY TO HORSEHEAD B

AT LAMBORN RD INTERSECT, Baltimore, MD

Built 2012 Load: 27.2 t ADT: 14,121

WINCHESTER BOULEVA

Good

Over: TRIBUTARY OF TUSCARORA C

WEST OF HARVARD PLACE, Frederick, MD

Built 2002 Load: 27.2 t ADT: 350

IS 95 VIADUCT SB

Good

Over: S PONCA STREET

Milepost M57.0, Baltimore city, MD

Built 1980 Load: 27.2 t ADT: 72,095

IS 95 VIADUCT NB

Good

Over: BOSTON ST ODONNELL S

1.6 MI N OF TOLL FACILITY, Baltimore city, MD

Built 1980 Load: 27.2 t ADT: 57,722

REICHS FORD ROAD

Good

Over: BUSH CREEK

0.1 MI W OF IJAMSVILLE RD, Frederick, MD

Built 1909 Load: 27.7 t ADT: 817

MD 76

Good

Over: MARYLAND MIDLAND RR

0.18 MILE NORTH OF MD 77, Frederick, MD

Built 2001 Load: 28.1 t ADT: 901

WEST LIBERTY ROAD

Good

Over: DEER CREEK

0.2 MI S OF GORSUCH RD, Baltimore, MD

Built 1992 Load: 28.1 t ADT: 348

WINTERS CHURCH RD

Good

Over: LITTLE PIPE CREEK

0.48 MI S OF MD 75, Carroll, MD

Built 1981 Load: 28.1 t ADT: 151

CHURCH ROAD

Good

Over: UNNAMED STREAM

1.5 MILES NORTH OF MD 214, Prince George's, MD

Built 2010 Load: 28.1 t ADT: 9,394

WARNER HOLLOW ROAD

Good

Over: TRIBUTARY OF EDGEMONT RE

0.95 MI SE OF MD RTE 491, Washington, MD

Built 1985 Load: 28.1 t ADT: 96

CHET KELLY ROAD

Good

Over: MILL RUN

0.01 MI S MILL RUN RD, Garrett, MD

Built 2015 Load: 28.2 t ADT: 138

MD 131

Good

Over: ROLAND RUN

0.874 MILE WEST OF MD 45, Baltimore, MD

Built 1992 Load: 28.5 t ADT: 12,051

AMISH ROAD

Good

Over: IS 68/US 219

1.32 MILES S OF US 40AL, Garrett, MD

Built 1975 Load: 28.6 t ADT: 999

WRIGHTS MILL ROAD

Good

Over: BRICE RUN

0.37 MI N OF DAVIS AVENUE, Baltimore, MD

Built 1986 Load: 28.6 t ADT: 320

US 40

Good

Over: BR OF OTTER POINT CREEK

0.41 MILE EAST OF MD 24, Harford, MD

Built 1994 Load: 29.0 t ADT: 21,614

MD 32 EB

Good

Over: CEDAR LANE

1.19 MILE NORTH OF US 29, Howard, MD

Built 1994 Load: 29.0 t ADT: 48,582

MD 32 WB

Good

Over: CEDAR LANE

1.19 MILE NORTH OF US 29, Howard, MD

Built 1994 Load: 29.0 t ADT: 48,582

US 1 NB

Good

Over: PATUXENT RIVER

ON HOWARD CO LINE, Prince George's, MD

Built 1949 Load: 29.0 t ADT: 16,182

CATOCTIN HOLLOW RD

Good

Over: LITTLE HUNTING CREEK

1.12 MI W OF US RTE 15, Frederick, MD

Built 1980 Load: 29.0 t ADT: 201

AVILTON LONACONING

Good

Over: SAVAGE RIVER

2.8 MI S OF MD RTE 40, Garrett, MD

Built 2001 Load: 29.0 t ADT: 1,024

BUNTING ROAD

Good

Over: BEAVERDAM CREEK

0.12 MI EAST OF US 13, Worcester, MD

Built 2007 Load: 29.0 t ADT: 180

OLD STAGE ROAD

Good

Over: CAREY BRANCH

0.66 MI SE OF US 113, Worcester, MD

Built 1992 Load: 29.0 t ADT: 220

MD 234

Good

Over: ALLENS FRESH RUN

0.28 MILES EAST OF US 301, Charles, MD

Built 2014 Load: 29.5 t ADT: 7,500

PETE WILES ROAD

Good

Over: LITTLE CATOCTIN CREEK

1.3 MI N OF MD RTE 17, Frederick, MD

Built 1973 Load: 29.5 t ADT: 485

NORTH HILL ROAD

Good

Over: WOLFDEN RUN

NORTH HILL ROAD, Garrett, MD

Built 2012 Load: 29.5 t ADT: 255

UTICA DISTRICT PAR

Good

Over: TRIBUTARY OF FISHING CRE

WEST OF OLD FREDERICK RD, Frederick, MD

Built 2020 Load: 29.8 t ADT: 200

MARYLAND 560

Good

Over: NYDEGGER RUN

0.36 MILE NORTH OF US 50, Garrett, MD

Built 1932 Load: 29.9 t ADT: 1,930

COLD BOTTOM ROAD

Good

Over: BUFFALO CREEK

1.5 MI W OF I 83, Baltimore, MD

Built 1920 Load: 29.9 t ADT: 408

Showing 3,501-3,550 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.