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)

Counties (24)

Allegany 245 Anne Arundel 389 Baltimore 783 Baltimore city 374 Calvert 33 Caroline 70 Carroll 205 Cecil 193 Charles 94 Dorchester 47 Frederick 486 Garrett 139 Harford 275 Howard 309 Kent 44 Montgomery 515 Prince George's 576 Queen Anne's 88 Somerset 46 St. Mary's 50 Talbot 42 Washington 300 Wicomico 99 Worcester 82

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.

WASHINGTON STREET

Poor

Over: CSXT RAILROAD

0.2 MI W OF CUMBERLAND ST, Allegany, MD

Built 1930 Load: 0.0 t ADT: 110

CUMBERLAND STREET

Poor

Over: CSXT RAILROAD

0.6 MI E OF WASHINGTON ST, Allegany, MD

Built 1929 Load: 0.0 t ADT: 110

MILL STREET

Poor

Over: ROCK RUN

.01 MI S. OF RACE STREET, Cecil, MD

Built 1940 Load: 0.0 t ADT: 100

BACK LANDING ROAD

Poor

Over: HUNTING CREEK

ON CAROLINE COUNTY LINE, Dorchester, MD

Built 1941 Load: 0.0 t

TALBOT AVENUE

Poor

Over: CSXT RAILROAD

0.2 MI E OF MICHIGAN AVE, Montgomery, MD

Built 1918 Load: 0.0 t ADT: 1,430

TAYLOR MILL ROAD

Poor

Over: OLD MILL STREAM BRANCH

0.7 MILE EAST OF MD 213, Queen Anne's, MD

Built 1955 Load: 0.0 t ADT: 100

All Bridges in Maryland

GOLDLEAF DRIVE

Fair

Over: MINNEHAHA BRANCH

0.1 MI N OF JCT SR MD 614, Montgomery, MD

Built 1985 Load: 99.9 t ADT: 743

FATHER HURLEY BOUL

Fair

Over: TRIB TO LITTLE SENECA CR

0.3 MI SE OF JCT I-270, Montgomery, MD

Built 1995 Load: 99.9 t ADT: 44,490

LAURIE DRIVE

Fair

Over: HOLLYWOOD BRANCH

0.4 MI S JCT RANDLPH RD E, Montgomery, MD

Built 1965 Load: 99.9 t ADT: 575

SPARTAN ROAD

Fair

Over: TRIBUTARY TO JAMES CREEK

.1 MI N OF MD-108, Montgomery, MD

Built 1990 Load: 99.9 t ADT: 6,004

OLD BALTIMORE ROAD

Fair

Over: TRIBUTARY TO JAMES CREEK

0.5 MI N OF MD 108, Montgomery, MD

Built 1985 Load: 99.9 t ADT: 3,494

OLD BALTIMORE ROAD

Fair

Over: JAMES CREEK TRIBUTARY

1.2 MI. N. OF MD 108, Montgomery, MD

Built 1998 Load: 99.9 t ADT: 3,273

MONTROSE PARKWAY

Fair

Over: OLD FARM CREEK TRIBUTARY

1.0 MILE WEST OF I-270, Montgomery, MD

Built 2006 Load: 99.9 t ADT: 28,776

BEXHILL DRIVE

Fair

Over: SILVER CREEK

AT KENSINGTON PARKWAY, Montgomery, MD

Built 1985 Load: 99.9 t ADT: 1,029

CRYSTAL ROCK DRIVE

Fair

Over: TRIBUTARY TO LITTLE SENE

.6 M. N. OF MD. 27, Montgomery, MD

Built 1988 Load: 99.9 t ADT: 7,114

RICHTER FARM ROAD

Fair

Over: TRIB TO LITTLE SENECA CR

0.1 MILES SOUTH OF MD-117, Montgomery, MD

Built 2000 Load: 99.9 t ADT: 7,433

RUSSETT ROAD

Fair

Over: ROCK CREEK TRIBUTARY

0.65 MI SOUTH OF MD-28, Montgomery, MD

Built 1966 Load: 99.9 t ADT: 4,597

LOCBURY DRIVE

Fair

Over: TRIB TO LAKE CHURCHILL

0.5 MI. W. OF I-270, Montgomery, MD

Built 1992 Load: 99.9 t ADT: 105

HARVEST SQUARE COU

Fair

Over: BUCK BRANCH TRIB

1.8 MI. E. OF MD 190, Montgomery, MD

Built 1987 Load: 99.9 t ADT: 21

SEVEN LOCKS ROAD

Fair

Over: CABIN JOHN CREEK TRIBUTA

0.5 MI N. OF MD 191, Montgomery, MD

Built 1965 Load: 99.9 t ADT: 20,520

HATHAWAY DRIVE

Fair

Over: LUTES RUN

1300 FT. W. OF MD 182, Montgomery, MD

Built 1983 Load: 99.9 t ADT: 104

FOUNDERS MILL DRIV

Fair

Over: MILL CREEK TRIB

0.7 MI. S. OF MD 115, Montgomery, MD

Built 1983 Load: 99.9 t ADT: 105

LONG CORNER ROAD

Fair

Over: PATUXENT RIVER TRIB

1.90 MI. N. OF MD108, Montgomery, MD

Built 1970 Load: 99.9 t ADT: 821

BUREAU DRIVE

Fair

Over: LONG DRAUGHT BRANCH

0.4 MILES NORTH OF MD 117, Montgomery, MD

Built 1982 Load: 99.9 t ADT: 16,173

KENSINGTON PARKWAY

Fair

Over: SILVER CREEK

0.5 MI EAST OF MD 193, Montgomery, MD

Built 1940 Load: 99.9 t ADT: 4,601

BEACH DRIVE

Fair

Over: TRIB TO ROCK CREEK

0.9 MI SOUTH OF MD 547, Montgomery, MD

Built 1968 Load: 99.9 t ADT: 6,415

SLIGO CREEK PARKW

Fair

Over: TRIBUTARY TO SLIGO CREEK

0.9 MI SOUTH OF MD 320, Montgomery, MD

Built 1996 Load: 99.9 t ADT: 4,344

WOOTTON PARKWAY

Fair

Over: TRIBUTARY TO WATTS BRANC

0.8 MI W OF JCT SR 189, Montgomery, MD

Built 1971 Load: 99.9 t ADT: 14,464

CROFTON HILL LANE

Fair

Over: WATTS BRANCH TRIBUTARY

0.1 MILES SOUTH OF MD 28, Montgomery, MD

Built 1990 Load: 99.9 t ADT: 300

FALLSGROVE DRIVE

Fair

Over: TRIBUTARY TO WATTS BRANC

0.5M S OF MD 28, Montgomery, MD

Built 2003 Load: 99.9 t ADT: 5,725

BROOKLYN BRIDGE RO

Fair

Over: WALKER BRANCH

0.5 MI EAST OF I-95, Prince George's, MD

Built 1953 Load: 99.9 t ADT: 3,173

RACE TRACK ROAD

Fair

Over: TRIB TO PATUXENT RIVER

0.30 MI N OF MD 450, Prince George's, MD

Built 1969 Load: 99.9 t ADT: 21,230

BRAE BROOKE DRIVE

Fair

Over: TRIB TO BALD HILL BRANCH

1.0 MI SOUTH OF MD 193, Prince George's, MD

Built 1980 Load: 99.9 t ADT: 2,000

BRIARWOOD DRIVE

Fair

Over: TRIB TO CROW BRANCH

0.07 MI W OF MD 197, Prince George's, MD

Built 1964 Load: 99.9 t ADT: 5,510

SHERIFF ROAD

Fair

Over: CABIN BRANCH

0.57 MI W OF MD 704, Prince George's, MD

Built 1974 Load: 99.9 t ADT: 25,149

ARDWICK-ARDMORE RD

Fair

Over: TRIB TO BALD HILL BRANCH

1.04 MI EAST OF I-95, Prince George's, MD

Built 2000 Load: 99.9 t ADT: 10,499

HAMPTON PARK BLVD

Fair

Over: SOUTHWEST BRANCH

0.27 MI S OF MD 214, Prince George's, MD

Built 1978 Load: 99.9 t ADT: 28,216

WHEELER ROAD

Fair

Over: BARNABY RUN

1.34 MILES NE OF MD 414, Prince George's, MD

Built 1959 Load: 99.9 t ADT: 14,865

BRINKLEY ROAD

Fair

Over: TRIB OF HENSON CREEK

100 FEET W OF FISHER ROAD, Prince George's, MD

Built 1953 Load: 99.9 t ADT: 19,422

KENNEBEC STREET

Fair

Over: BARNABY RUN

25 FT WEST OF OWENS ROAD, Prince George's, MD

Built 1961 Load: 99.9 t ADT: 5,390

ST. JAMES ROAD

Fair

Over: TRIBUTARY TO PISCATAWAY

1600 W OF LIVINGSTON ROAD, Prince George's, MD

Built 2005 Load: 99.9 t ADT: 290

COLLEGE STATION DR

Fair

Over: TRIB TO SOUTHWEST BRANCH

0.5 MI. WEST OF MD 202, Prince George's, MD

Built 1989 Load: 99.9 t ADT: 630

CAMPUS WAY SOUTH

Fair

Over: TRIBUTARY TO SOUTHWEST B

0.2 MI WEST OF MD 202, Prince George's, MD

Built 1972 Load: 99.9 t ADT: 15,221

OLD STAGE ROAD

Fair

Over: TRIB TO COLLINGTON BR

0.6 MI EAST OF CHURCH RD, Prince George's, MD

Built 1992 Load: 99.9 t ADT: 670

MILLSTREAM DRIVE

Fair

Over: TRIB TO PATUXENT RIVER

0.2 MI NORTH OF MD 450, Prince George's, MD

Built 1962 Load: 99.9 t ADT: 5,762

DORSET ROAD

Fair

Over: TRIB TO PATUXENT RIVER

0.06 M S OF BROOKLYN B RD, Prince George's, MD

Built 1973 Load: 99.9 t ADT: 685

LAMONT DRIVE

Fair

Over: TRIBUTARY TO BRIER DITCH

0.01 M S OF CARROLTN PKWY, Prince George's, MD

Built 1970 Load: 99.9 t ADT: 8,306

FEY ROAD

Fair

Over: TRIB. TO CHESTER RIVER

0.41 MI N FROM MD213, Queen Anne's, MD

Built 1985 Load: 99.9 t ADT: 1,294

BENTON CORNERS ROA

Fair

Over: RED LION BRANCH

0.07 MI SOUTH OF MD 300, Queen Anne's, MD

Built 1984 Load: 99.9 t ADT: 110

FELTON SCHOOL ROAD

Fair

Over: ANDOVER BRANCH

0.88 MI NW of MD 300, Queen Anne's, MD

Built 1983 Load: 99.9 t ADT: 221

STULLTOWN ROAD

Fair

Over: GRAVELLY RUN

3.2 MI NE JCT W MD RT 300, Queen Anne's, MD

Built 1983 Load: 99.9 t ADT: 250

LIEBY ROAD

Fair

Over: GRANNY FINLEY BRANCH

.71 MI SW OF FLAT IRON SQ, Queen Anne's, MD

Built 1983 Load: 99.9 t ADT: 250

WILLOW BRANCH ROAD

Fair

Over: GERMAN BRANCH

0.1 MI. NW OF HOPE RD, Queen Anne's, MD

Built 1983 Load: 99.9 t ADT: 331

GRANGE HALL ROAD

Fair

Over: WYE EAST RIVER

0.95 MI. NE OF MD 213, Queen Anne's, MD

Built 1982 Load: 99.9 t ADT: 221

HORSESHOE ROAD

Fair

Over: UNNAMED STREAM

0.3 MI. S. CROUSE MILL RD, Queen Anne's, MD

Built 1982 Load: 99.9 t ADT: 1,105

HURRY RD

Fair

Over: NELSONS RUN

0.2 MI S OF MD RTE 238, St. Mary's, MD

Built 2008 Load: 99.9 t ADT: 1,427

Showing 3,401-3,450 of 5,484 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
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.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.

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.