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

HILLEN ROAD

Fair

Over: CHINQUAPIN RUN

0.2 MI N OF COLDSPRING LA, Baltimore city, MD

Built 1900 Load: 32.7 t ADT: 11,996

EDISON HIGHWAY

Fair

Over: AMTRAK RAILROAD

0.2 MI N OF MONUMENT ST, Baltimore city, MD

Built 1931 Load: 32.7 t ADT: 18,376

HAMILTON AVENUE

Fair

Over: MOORES RUN

0.6 MI SE OF BELAIR RD, Baltimore city, MD

Built 1964 Load: 32.7 t ADT: 4,563

MORAVIA ROAD

Fair

Over: BIDDISON RUN

0.2 MI N OF IS 895, Baltimore city, MD

Built 1966 Load: 32.7 t ADT: 27,420

BELAIR ROAD

Fair

Over: HERRING RUN

0.6 MI W ERDMAN AVE, Baltimore city, MD

Built 1925 Load: 32.7 t ADT: 22,752

MORAVIA PARK DRIVE

Fair

Over: BIDDISON RUN

0.3 MI NE OF IS 895, Baltimore city, MD

Built 1966 Load: 32.7 t ADT: 1,374

RUSSELL AND BUSH S

Fair

Over: SPRING GARDENS

0.3 MI NE OF MONROE ST, Baltimore city, MD

Built 1910 Load: 32.7 t ADT: 2,125

CHESAPEAKE AVENUE

Fair

Over: TRIB. TO PATAPSCO RIVER

CHESAPEAKE AVE W OF 8THST, Baltimore city, MD

Built 1920 Load: 32.7 t ADT: 3,951

LOCH RAVEN DRIVE

Fair

Over: TOWSON RUN

0.9 MI E CROMWELL BRDG RD, Baltimore city, MD

Built 1879 Load: 32.7 t ADT: 896

PRETTYBOY DAM ROAD

Fair

Over: PRETTYBOY RESERVOIR

2.6 MI N MOUNT CARMEL RD, Baltimore, MD

Built 1932 Load: 32.7 t ADT: 400

EAGER STREET

Fair

Over: FALLSWAY

EAGER STREET AT FALLSWAY, Baltimore city, MD

Built 1900 Load: 32.7 t ADT: 1,695

LOCH RAVEN BOULEVA

Fair

Over: W BRANCH OF HERRING RUN

0.3 MI N OF NORTHERN PKY, Baltimore city, MD

Built 1930 Load: 32.7 t ADT: 8,543

DUKELAND STREET

Fair

Over: MAIDENS CHOICE CREEK

0.5 MI E OF CATON AVE, Baltimore city, MD

Built 1950 Load: 32.7 t ADT: 11,447

NORTH VINCENT STRE

Fair

Over: AMTRAK RAILROAD

0.2 MI E OF MONROE ST, Baltimore city, MD

Built 1920 Load: 32.7 t ADT: 3,077

REMINGTON AVENUE

Fair

Over: ABANDONED RAILROAD

REMINGTON AV/ABANDONED RR, Baltimore city, MD

Built 1901 Load: 32.7 t ADT: 3,110

BARCLAY STREET

Fair

Over: CSX RAILROAD

0.1 MI W OF GREENMOUNT AV, Baltimore city, MD

Built 1900 Load: 32.7 t ADT: 7,434

GUILFORD AVENUE

Fair

Over: CSX

0.2 MI E OF GREENMOUNT AV, Baltimore city, MD

Built 1914 Load: 32.7 t ADT: 6,197

HUNTINGDON AVENUE

Fair

Over: CSX

0.2 MI W OF MARYLAND AVE, Baltimore city, MD

Built 1900 Load: 32.7 t ADT: 10,312

WYMAN PARK DRIVE

Fair

Over: STONEY RUN

0.2 MI E SISSON ST, Baltimore city, MD

Built 1920 Load: 32.7 t ADT: 1,386

YALE AVENUE

Fair

Over: MAIDENS CHOICE CREEK

0.2 MI S OF FREDERICK AVE, Baltimore city, MD

Built 1950 Load: 32.7 t ADT: 1,204

FULTON AVENUE

Fair

Over: AMTRAK RAILROAD

0.5 MI S OF NORTH AVE, Baltimore city, MD

Built 1936 Load: 32.7 t ADT: 23,998

SPRINGFIELD DRIVE

Fair

Over: LITTLE NORTHEAST CREEK

0.2 MI. S. OF SR 273, Cecil, MD

Built 1980 Load: 32.7 t ADT: 379

WHEATLEY ROAD

Fair

Over: LITTLE NORTHEAST CREEK

2.48 MILES NE OF MD 272, Cecil, MD

Built 1965 Load: 32.7 t ADT: 355

CONSTITUTION DRIVE

Fair

Over: PINEY BRANCH

1 Mile West of US 301, Charles, MD

Built 1995 Load: 32.7 t ADT: 208

COURTNEY DRIVE

Fair

Over: TRIBUTARY OF MATTAWOMAN

.5 MILE E. OF MD RTE 228, Charles, MD

Built 1989 Load: 32.7 t ADT: 250

DEEP RUN ROAD

Fair

Over: DEEP RUN

0.2 E OLD HANOVER ROAD, Carroll, MD

Built 1978 Load: 32.7 t ADT: 942

HOFFMAN MILL ROAD

Fair

Over: EAST BRANCH PATAPSCO RIV

1 MI W OF HOUCKSVILLE RD., Carroll, MD

Built 1991 Load: 32.7 t ADT: 751

TUCKAHOE ROAD

Fair

Over: TRIB TO TUCKAHOE CREEK

0.55 MI S OF ALT MD 404, Caroline, MD

Built 1911 Load: 32.7 t ADT: 953

OLD DENTON ROAD

Fair

Over: FAULKNER BRANCH

0.6 MI N OF FEDERALSBURG, Caroline, MD

Built 1963 Load: 32.7 t ADT: 2,383

LEGORE BRIDGE ROAD

Fair

Over: MONOCACY RIVER

3 MI N OF WOODSBORO, Frederick, MD

Built 1903 Load: 32.7 t ADT: 2,045

PARK MILLS ROAD

Fair

Over: BENNETT CREEK

2.75 MI SOUTH OF MD 80, Frederick, MD

Built 1965 Load: 32.7 t ADT: 674

KEY PARKWAY

Fair

Over: ROCK CREEK

500 W OF WILLOWDALE DR., Frederick, MD

Built 1990 Load: 32.7 t ADT: 3,560

COLLEGE AVENUE

Fair

Over: CARROLL CREEK FLOODPLAIN

0.2 MI NORTH OF MD 144, Frederick, MD

Built 1992 Load: 32.7 t ADT: 1,652

NORTH McCAIN DRIVE

Fair

Over: ROCK CREEK

0.2 MI. NORTH OF US 40, Frederick, MD

Built 1996 Load: 32.7 t ADT: 9,790

CHRISTOPHERS CROSS

Fair

Over: EDISON BRANCH

2.7 MI. WEST OF US 15, Frederick, MD

Built 1989 Load: 32.7 t ADT: 4,108

HAYWARD ROAD

Fair

Over: OPOSSUM BRANCH

0.7 MILES WEST OF US 15, Frederick, MD

Built 1990 Load: 32.7 t ADT: 6,712

TUSCANNEY DRIVE

Fair

Over: EDISON BRANCH

1.3 MI WEST OF US 15, Frederick, MD

Built 1998 Load: 32.7 t ADT: 4,027

BIGGS FORD ROAD

Fair

Over: DUBLIN BRANCH

1.5 MI E OF US RTE 15, Frederick, MD

Built 2004 Load: 32.7 t ADT: 3,911

SAVAGE RIVER ROAD

Fair

Over: CRABTREE CREEK

0.03 MI E SPRING LICK RD, Garrett, MD

Built 1950 Load: 32.7 t ADT: 598

SAVAGE RIVER ROAD

Fair

Over: MIDDLE FORK

0.7 MI N OF SPRING LICK R, Garrett, MD

Built 1950 Load: 32.7 t ADT: 544

FRIENDSVILLE ADDIS

Fair

Over: BEAR CREEK

0.04 MI NE OF PARK AVE, Garrett, MD

Built 1979 Load: 32.7 t ADT: 1,055

ACCIDENT BEAR CREE

Fair

Over: BEAR CREEK

0.17 MI SE WALNUT ST, Garrett, MD

Built 1921 Load: 32.7 t ADT: 2,345

ARTHUR DEVINE ROAD

Fair

Over: BEAR CREEK

0.1 MI SW ACC BEAR CR RD, Garrett, MD

Built 1935 Load: 32.7 t ADT: 27

LAKE FANNY ROAD

Fair

Over: WINTERS RUN

0.2 MILES S OF US 1, Harford, MD

Built 1913 Load: 32.7 t ADT: 11

OLD FALLSTON ROAD

Fair

Over: MA & PA RAILROAD (ABAND)

0.3 MILES S OF MD 152, Harford, MD

Built 1930 Load: 32.7 t ADT: 2,210

CLAYTON ROAD

Fair

Over: MOUNTAIN BRANCH

0.3 MILES W OF SINGER RD, Harford, MD

Built 1970 Load: 32.7 t ADT: 766

FOLLY QUARTER RD

Fair

Over: MIDDLE PATUXENT RIVER

2.7 MI S OF MD RTE 144, Howard, MD

Built 1922 Load: 32.7 t ADT: 3,489

BUSHY PARK ROAD

Fair

Over: CATTAIL CREEK

0.1 MI W CARRS MILL RD, Howard, MD

Built 1970 Load: 32.7 t ADT: 317

FREDERICK ROAD

Fair

Over: LITTLE PATUXENT RIVER

0.5 MI E CENTENNIAL LANE, Howard, MD

Built 1930 Load: 32.7 t ADT: 10,927

OLD COLUMBIA ROAD

Fair

Over: MIDDLE PATUXENT RIVER

0.01 MI E OF US RTE 29, Howard, MD

Built 1920 Load: 32.7 t ADT: 3,484

Showing 801-850 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.