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

DULANEY VALLEY ROA

Fair

Over: DULANEY BRANCH

0.3 MI N MD RTE 542, Baltimore, MD

Built 1952 Load: 25.8 t ADT: 6,872

AVONDALE ROAD

Fair

Over: WHITE MARSH RUN

0.02 M N OF I 695, Baltimore, MD

Built 1971 Load: 25.8 t ADT: 4,232

BAPTIST ROAD

Fair

Over: ALLOWAY CREEK

0.09 MI N OF STARNERS DAM, Carroll, MD

Built 1940 Load: 25.8 t ADT: 269

SALEM BOTTOM ROAD

Fair

Over: MORGAN RUN

0.26 MI SE OF BLOOM ROAD, Carroll, MD

Built 1964 Load: 25.8 t ADT: 982

I-395 SPUR SB

Fair

Over: HAMBURG ST & RR

Milepost M4.0, Baltimore city, MD

Built 1982 Load: 25.8 t ADT: 19,418

PRIVATE LANE

Fair

Over: FISHING CREEK

200 W OF MOUNTAINDALE RD, Frederick, MD

Built 2007 Load: 25.9 t ADT: 50

MD 695

Fair

Over: PATAPSCO RIVER

I-695 OVER PATAPSCO RIVER, Baltimore city, MD

Built 1976 Load: 25.9 t ADT: 30,767

MD 591B

Fair

Over: LOVE RUN

0.75 MILE SOUTH OF US 1, Cecil, MD

Built 1917 Load: 26.3 t ADT: 199

MD 478

Fair

Over: BR OF POTOMAC RIVER

0.23 MILE EAST OF MD 180, Frederick, MD

Built 1926 Load: 26.3 t ADT: 2,471

BLOOMING ROSE ROAD

Fair

Over: IS 68

0.22 MI S OF MD 42, Garrett, MD

Built 1975 Load: 26.3 t ADT: 2,113

MD 291

Fair

Over: CYPRESS BRANCH

0.24 MILE EAST OF MD 313, Kent, MD

Built 1928 Load: 26.3 t ADT: 1,841

US 29

Fair

Over: SLIGO CREEK

0.14 M S OF FRANKLIN AVE, Montgomery, MD

Built 1936 Load: 26.3 t ADT: 55,302

MD 396

Fair

Over: LITTLE FALLS BRANCH

0.69 MILE WEST OF WASH DC, Montgomery, MD

Built 1931 Load: 26.3 t ADT: 15,581

IS 70 EB

Fair

Over: GR TONOLOWAY CK CO RDS

0.67 MILE W OF MD 144WB, Washington, MD

Built 1965 Load: 26.3 t ADT: 19,611

US 13 BUS SB

Fair

Over: TONYTANK POND

0.34 MILE NORTH OF MD 513, Wicomico, MD

Built 1954 Load: 26.3 t ADT: 11,029

MD 346

Fair

Over: POCOMOKE RIVER

ON WORCESTER CO LINE, Wicomico, MD

Built 1946 Load: 26.3 t ADT: 2,382

GREEN ROAD

Fair

Over: LITTLE GUNPOWDER FALLS

1.0 MI N SWEET AIR RD, Baltimore, MD

Built 1990 Load: 26.3 t ADT: 603

HICKS ROAD

Fair

Over: LITTLE FALLS

1 MI SE OF BIG FALLS RD, Baltimore, MD

Built 1988 Load: 26.3 t ADT: 3,000

WESTERN RUN ROAD

Fair

Over: WESTERN RUN

1.3 MI N OF SHAWAN RD, Baltimore, MD

Built 1988 Load: 26.3 t ADT: 2,299

FREELAND ROAD

Fair

Over: LITTLE FALLS

1.3 MI NW OF MIDDLETOWN R, Baltimore, MD

Built 1986 Load: 26.3 t ADT: 1,699

HARTLEY MILL ROAD

Fair

Over: LONG GREEN CREEK

0.2 MI SE OF GLEN ARM RD, Baltimore, MD

Built 1988 Load: 26.3 t ADT: 1,841

BENTLEY ROAD

Fair

Over: BEETREE RUN

200 FEET N OF EAGLE MILL, Baltimore, MD

Built 1988 Load: 26.3 t ADT: 300

YORK ROAD NO 1

Fair

Over: SOUTH BRANCH GUNPOWDER F

1 M NE OF LINEBORO RD, Carroll, MD

Built 1940 Load: 26.3 t ADT: 88

BULLFROG ROAD

Fair

Over: MONOCACY RIVER

0.6 MI S OF BOLLINGER SCL, Frederick, MD

Built 1908 Load: 26.3 t ADT: 324

WOODVILLE ROAD

Fair

Over: TALBOT BRANCH

AT TALBOT RUN RD INTERSEC, Frederick, MD

Built 1961 Load: 26.3 t ADT: 890

OLD BALTIMORE PIKE

Fair

Over: INDIAN CREEK

1000 FT NE OF US 1, Prince George's, MD

Built 1984 Load: 26.3 t ADT: 14,447

51ST AVENUE

Fair

Over: TRIBUTARY TO PAINT BRANC

0.1 MILES S. OF CAMPUS DR, Prince George's, MD

Built 1989 Load: 26.3 t ADT: 300

MARBLE QUARRY ROAD

Fair

Over: LITTLE ANTIETAM CREEK

0.81 MI NW OF MD RTE 67, Washington, MD

Built 1985 Load: 26.3 t ADT: 178

JEFFERSON BOULEVAR

Fair

Over: HAMILTON RUN

0.5 MI E CANNON AVE, Washington, MD

Built 1929 Load: 26.3 t ADT: 9,505

MEZICK ROAD

Fair

Over: SHILES CREEK

1 MI EAST MUDDY HOLE RD, Wicomico, MD

Built 1994 Load: 26.3 t ADT: 242

US RTE 50 EB

Fair

Over: CHESAPEAKE BAY

6 MI E OF MD RTE 2, Anne Arundel, MD

Built 1951 Load: 26.3 t ADT: 38,923

I-895 NB RAMP

Fair

Over: PATAPSCO RIVER

0.1 MI SOUTH OF I-195, Howard, MD

Built 1957 Load: 26.3 t ADT: 1,491

BROADFOOT RD

Fair

Over: MIDWAY BRANCH

0.16 MI. E TAYLOR AVE, Anne Arundel, MD

Built 1940 Load: 26.5 t ADT: 120

MD 316

Fair

Over: BR OF BIG ELK CREEK

0.56 MILE NORTH OF MD 279, Cecil, MD

Built 1931 Load: 26.8 t ADT: 4,331

US 50

Fair

Over: CHOPTANK RIVER

ON TALBOT CO LINE, Dorchester, MD

Built 1987 Load: 26.8 t ADT: 27,191

MD 42

Fair

Over: YOUGHIOGHENY RIVER

0.11 MILE NORTH OF MD 742, Garrett, MD

Built 1976 Load: 26.8 t ADT: 2,791

US 219J

Fair

Over: IS 68/US 40

0.48 MI S OF US 40AL, Garrett, MD

Built 1975 Load: 26.8 t ADT: 2,612

MD 624

Fair

Over: BROAD CREEK

1.15 MILES N OF MD 165, Harford, MD

Built 1936 Load: 26.8 t ADT: 3,920

MD 20

Fair

Over: FANNEL BRANCH

0.85 MILE EAST OF MD 446, Kent, MD

Built 1949 Load: 26.8 t ADT: 7,420

MD 213

Fair

Over: BROWNS BRANCH

0.47 MILE NORTH OF MD 19, Queen Anne's, MD

Built 1910 Load: 26.8 t ADT: 8,001

SERVICE ROAD

Fair

Over: BEAVER CREEK

0.11 MILE WEST OF MD 66, Washington, MD

Built 1968 Load: 26.8 t ADT: 150

TAYLOR AVENUE

Fair

Over: TRIBUTARY TO HERRING RUN

0.14 MI SE OF MD 41, Baltimore, MD

Built 1969 Load: 26.8 t ADT: 14,881

BAKER ROAD

Fair

Over: BRANCH OF MORGAN RUN

0.93 MI EAST OF MD 27, Carroll, MD

Built 1974 Load: 26.8 t ADT: 408

OLD FREDERICK ROAD

Fair

Over: OWENS CREEK

0.3 MI S OF MD RTE 77, Frederick, MD

Built 1869 Load: 26.8 t ADT: 843

MD 942

Fair

Over: N BRANCH POTOMAC RIVER

ON WEST VIRGINIA LINE, Allegany, MD

Built 1953 Load: 27.2 t ADT: 7,278

US 1

Fair

Over: HERBERT RUN

0.49 MI S OF MD 644A, Baltimore, MD

Built 1949 Load: 27.2 t ADT: 11,542

IS 95 SBR

Fair

Over: CSX PATAPSCO RIVER CO

ON HOWARD CO LINE, Baltimore, MD

Built 1968 Load: 27.2 t ADT: 172,509

MD 257

Fair

Over: MILL RUN

0.053 M N OF MILL RUN RD, Charles, MD

Built 1900 Load: 27.2 t ADT: 3,990

MD 446

Fair

Over: MILL POND CREEK

0.80 MILE SOUTH OF MD 20, Kent, MD

Built 1929 Load: 27.2 t ADT: 610

MD 213

Fair

Over: CHESTER RIVER

ON QUEEN ANNES CO LINE, Kent, MD

Built 1930 Load: 27.2 t ADT: 13,835

Showing 301-350 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.