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 425

Good

Over: JANE BERRYS RUN

1.09 MILES NORTH OF MD 6, Charles, MD

Built 1991 Load: 32.7 t ADT: 2,400

MD 488

Good

Over: PINEY BRANCH

0.92 MILE WEST OF MD 5, Charles, MD

Built 1991 Load: 32.7 t ADT: 6,540

MD 225

Good

Over: BR OF PORT TOBACCO CREEK

0.23 M E OF BIBURY LANE, Charles, MD

Built 1949 Load: 32.7 t ADT: 12,302

MD 6

Good

Over: WHEATLEY RUN

3.49 M W OF ST MARYS CO, Charles, MD

Built 1987 Load: 32.7 t ADT: 6,492

US 40 RAMP F(2)

Good

Over: ROCK CREEK

0.80 MI W OF FREDERICK, Frederick, MD

Built 1969 Load: 32.7 t ADT: 3,593

MD 17

Good

Over: CATOCTIN CREEK

0.15 MILE SOUTH OF US 40, Frederick, MD

Built 1989 Load: 32.7 t ADT: 7,835

MD 76

Good

Over: MOTTERS RUN

.49 M S OF FOUR POINTS RD, Frederick, MD

Built 2012 Load: 32.7 t ADT: 903

MD 623

Good

Over: PEDDLER RUN

2.03 MILES N OF US 1, Harford, MD

Built 1987 Load: 32.7 t ADT: 1,501

MD 462

Good

Over: SWAN CREEK

0.27 MILE SOUTH OF IS 95, Harford, MD

Built 1978 Load: 32.7 t ADT: 6,501

MD 7

Good

Over: HAHA BRANCH

0.74 MILE NORTH OF MD 24, Harford, MD

Built 1976 Load: 32.7 t ADT: 13,781

MD 623

Good

Over: BR OF SUSQUEHANNA RIV

0.47 MILE NORTH OF MD 161, Harford, MD

Built 1993 Load: 32.7 t ADT: 1,620

MD 108

Good

Over: MD 32

0.09 M E OF TEN OAKS ROAD, Howard, MD

Built 1996 Load: 32.7 t ADT: 19,870

MD 28

Good

Over: BR OF WATTS BRANCH

0.53 MILE WEST OF IS 270, Montgomery, MD

Built 1988 Load: 32.7 t ADT: 47,601

MD 190

Good

Over: LITTLE FALLS

0.44 MI W OF WASH DC, Montgomery, MD

Built 1962 Load: 32.7 t ADT: 22,152

IS 495

Good

Over: SLIGO CREEK TRAIL

0.507 M E OF BR NO 15130, Montgomery, MD

Built 2002 Load: 32.7 t ADT: 232,010

MD 197

Good

Over: HORSEPEN BRANCH

.25 M N OF RUSTIC HILL DR, Prince George's, MD

Built 1989 Load: 32.7 t ADT: 26,322

MD 210 & MD 210B

Good

Over: CAREY BRANCH

1.88 MILES S OF MD 414, Prince George's, MD

Built 1945 Load: 32.7 t ADT: 65,100

MD 214

Good

Over: COLLINGTON BRANCH

0.44 MILE EAST OF MD 978C, Prince George's, MD

Built 1958 Load: 32.7 t ADT: 22,881

MD 214

Good

Over: NORTHEAST BRANCH

0.08 MILE WEST OF MD 193, Prince George's, MD

Built 1990 Load: 32.7 t ADT: 48,951

MD 382

Good

Over: BLACK SWAMP CREEK

1.33 MILES N OF MD 381, Prince George's, MD

Built 1987 Load: 32.7 t ADT: 1,630

MD 4 EB

Good

Over: WESTERN BRANCH

0.18 MILE WEST OF MD 717, Prince George's, MD

Built 1959 Load: 32.7 t ADT: 46,652

MD 4 WB

Good

Over: WESTERN BRANCH

0.18 MILE NORTH OF MD 717, Prince George's, MD

Built 1959 Load: 32.7 t ADT: 46,652

MD 201

Good

Over: BR OF INDIAN CREEK

0.76 MILE NORTH OF MD 193, Prince George's, MD

Built 1963 Load: 32.7 t ADT: 33,580

MD 214

Good

Over: BR OF SOUTHWEST BR

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

Built 1964 Load: 32.7 t ADT: 53,991

MD 197

Good

Over: CROW BRANCH

0.99 MILE SOUTH OF MD 198, Prince George's, MD

Built 1969 Load: 32.7 t ADT: 30,022

MD 564

Good

Over: BALD HILL BRANCH

0.7 MILE EAST OF MD 450, Prince George's, MD

Built 1973 Load: 32.7 t ADT: 18,290

MD 212

Good

Over: CIDER BARREL RUN

0.17 MILE SOUTH OF IS 95, Prince George's, MD

Built 1971 Load: 32.7 t ADT: 29,301

MD 210 & RAMP 1

Good

Over: CAREY BRANCH

1.09 M N OF LIVINGSTON RD, Prince George's, MD

Built 1945 Load: 32.7 t ADT: 32,915

MD 214

Good

Over: CABIN BRANCH

0.37 MILE EAST OF MD 332, Prince George's, MD

Built 1979 Load: 32.7 t ADT: 53,991

MD 450

Good

Over: LOTTSFORD BRANCH

0.19 M E OF ATWELL AVE, Prince George's, MD

Built 1999 Load: 32.7 t ADT: 27,830

MD 234

Good

Over: BUDDS CREEK

ON CHARLES CO LINE, St. Mary's, MD

Built 1960 Load: 32.7 t ADT: 6,221

MD 242

Good

Over: DYNARD RUN

0.86 MILE SOUTH OF MD 234, St. Mary's, MD

Built 1960 Load: 32.7 t ADT: 5,491

MD 471

Good

Over: ST. MARYS RIVER

1.01 MILES NORTH OF MD 5, St. Mary's, MD

Built 1990 Load: 32.7 t ADT: 4,242

US 13 SB

Good

Over: BACK CREEK

0.19 MILE SOUTH OF MD 413, Somerset, MD

Built 1964 Load: 32.7 t ADT: 13,630

MD 144WB

Good

Over: LITTLE TONOLOWAY CREEK

0.4 MILE EAST OF IS 68, Washington, MD

Built 1965 Load: 32.7 t ADT: 972

HOPEWELL ROAD

Good

Over: BR OF CONOCOCHEAGUE CREE

NW OF IS 81/US 11, Washington, MD

Built 1965 Load: 32.7 t ADT: 2,454

US 13 SB

Good

Over: MD 350

0.87 MILE S OF US 50BU, Wicomico, MD

Built 1974 Load: 32.7 t ADT: 24,770

PRIVATE ENTRANCE

Good

Over: WETIPQUIN CREEK

2 MI N OF COXS CORNER, Wicomico, MD

Built 1994 Load: 32.7 t ADT: 16

MD 90

Good

Over: CHURCH BRANCH

1.26 MILES EAST OF MD 346, Worcester, MD

Built 1976 Load: 32.7 t ADT: 8,118

LAUREL RUN ROAD

Good

Over: LAUREL RUN

0.41 MI W OF MD RTE 935, Allegany, MD

Built 2020 Load: 32.7 t ADT: 93

LAUREL RUN ROAD

Good

Over: LAUREL RUN

0.75 MI W OF MD RTE 935, Allegany, MD

Built 2020 Load: 32.7 t ADT: 98

SUGAR MAPLE ROAD

Good

Over: UNNAMED STREAM

0.04 MI N OF MD 36, Allegany, MD

Built 1950 Load: 32.7 t ADT: 337

TOWN CREEK ROAD

Good

Over: MURLEY BRANCH

0.02 MI SW OF WARM SPR RD, Allegany, MD

Built 2020 Load: 32.7 t ADT: 301

HARMANS ROAD

Good

Over: TRIBUTARY TO STONY RUN

0.35 MI N of MD 100, Anne Arundel, MD

Built 1991 Load: 32.7 t ADT: 8,906

QUARTERFIELD ROAD

Good

Over: UNNAMED TRIBUTARY TO SEV

1.58 MI S of MD174, Anne Arundel, MD

Built 2001 Load: 32.7 t ADT: 5,153

NUTWELL ROAD

Good

Over: TRACYS CREEK

1.12 MILES E OF MD 2, Anne Arundel, MD

Built 1998 Load: 32.7 t ADT: 331

OSLER DRIVE

Good

Over: TOWSON RUN

0.04 M S OF TWSNTOWN BLVD, Baltimore, MD

Built 1964 Load: 32.7 t ADT: 16,241

ROLLING ROAD

Good

Over: SCOTTS LEVEL BRANCH

0.38 MI S OF OLD COURT RD, Baltimore, MD

Built 1982 Load: 32.7 t ADT: 9,595

GILROY ROAD

Good

Over: OREGON BRANCH

0.28 MI E OF IS 83, Baltimore, MD

Built 1966 Load: 32.7 t ADT: 5,083

OWINGS MILLS BLVD

Good

Over: BRANCH OF GWYNNS FALLS

2.5 MI. NW OF JCT. SR 140, Baltimore, MD

Built 1996 Load: 32.7 t ADT: 8,600

Showing 3,601-3,650 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.