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 27

Fair

Over: MARYLAND MIDLAND RR

.12 MILE SOUTH OF MD 852G, Carroll, MD

Built 1959 Load: 20.0 t ADT: 18,790

MD 272 SB

Fair

Over: NORTHEAST CREEK

0.1 MILE NORTH OF MD 7C, Cecil, MD

Built 1945 Load: 20.0 t ADT: 6,302

MD 355 SB

Fair

Over: IS 495 IL

1.31 MILES S OF MD 547, Montgomery, MD

Built 1959 Load: 20.0 t ADT: 55,020

STRATHMORE AVENUE

Fair

Over: WESTERN RUN

0.1 MI N CROSS COUNTRY BL, Baltimore city, MD

Built 1955 Load: 20.0 t ADT: 15,199

OVERHILL ROAD

Fair

Over: STONY RUN

OVERHILL RD OV STONY RUN, Baltimore city, MD

Built 1930 Load: 20.0 t ADT: 11,921

BABYLON ROAD

Fair

Over: SILVER RUN

0.05 MI N OF MAYBERRY RD, Carroll, MD

Built 1960 Load: 20.0 t ADT: 117

CLARA BARTON PARKW

Fair

Over: CABIN JOHN CREEK & CABIN

1.6 MILES SOUTH OF I-495., Montgomery, MD

Built 1963 Load: 20.0 t ADT: 16,120

MD ROUTE 193

Fair

Over: BW PARKWAY

0.4 MILES NORTH OF I-95, Prince George's, MD

Built 1964 Load: 20.0 t ADT: 24,700

BW PARKWAY (SBL)

Fair

Over: ACCESS RAMP TO BW PARKWA

0.6 MILES SOUTH OF MD ROU, Prince George's, MD

Built 1954 Load: 20.0 t ADT: 34,075

US 220

Fair

Over: TRIB TO NORTH BR POTOMAC

1.46 MI N OF MD 830A, Allegany, MD

Built 1929 Load: 20.4 t ADT: 7,111

MD 4

Fair

Over: PATUXENT RIVER & TOWN CR

ON ST MARYS CO LINE, Calvert, MD

Built 1977 Load: 20.4 t ADT: 28,338

MD 17

Fair

Over: CATOCTIN CREEK

0.6 MILE SOUTH OF IS 70, Frederick, MD

Built 1928 Load: 20.4 t ADT: 3,891

OFFUTT ROAD

Fair

Over: TRIBUTARY TO BRICE RUN

0.92 MI S OF MD 26, Baltimore, MD

Built 1920 Load: 20.4 t ADT: 3,037

HARNEY ROAD

Fair

Over: ALLOWAY CREEK

1.26 MILES S OF PA LINE, Carroll, MD

Built 1919 Load: 20.4 t ADT: 1,911

STONE ROAD

Fair

Over: BIG PIPE CREEK

0.37 MI SE OF MAYBERRY RD, Carroll, MD

Built 1984 Load: 20.4 t ADT: 448

WALNUT TREE ROAD

Fair

Over: CYPRESS BRANCH

0.8 MI NW OF BIG STONE RD, Kent, MD

Built 1968 Load: 20.4 t ADT: 266

BELLEVUE FERRY DOC

Fair

Over: TRED AVON RIVER

1 MI NE OF OXFORD, Talbot, MD

Built 2002 Load: 20.4 t ADT: 2,005

IS 95 NB

Fair

Over: US 40(PULASKI HWY)

0.2 MI NORTH OF EXIT 61, Baltimore city, MD

Built 1973 Load: 20.4 t ADT: 56,885

STOKES ROAD

Fair

Over: STONEY CREEK

50M EAST OF E PALMER RD, Montgomery, MD

Built 1950 Load: 20.8 t ADT: 2,000

CEDAR POINT RD

Fair

Over: HARPERS CREEK

0.7 MI N OF BRONSON RD, St. Mary's, MD

Built 1952 Load: 20.9 t ADT: 1,440

CEDAR POINT RD

Fair

Over: GOOSE CREEK

0.9 MI NE OF MACAULAY AVE, St. Mary's, MD

Built 1952 Load: 20.9 t ADT: 1,440

MD 165

Fair

Over: LITTLE GUNPOWDER FALLS

ON HARFORD CO LINE, Baltimore, MD

Built 1931 Load: 20.9 t ADT: 7,011

US 15

Fair

Over: POTOMAC RIVER CSX C&O

POINT OF ROCKS, Frederick, MD

Built 1939 Load: 20.9 t ADT: 20,473

MD 17

Fair

Over: MIDDLE CREEK

1.13 MILES N OF MD 383, Frederick, MD

Built 1923 Load: 20.9 t ADT: 5,891

US 40 ALT

Fair

Over: CATOCTIN CREEK

0.05 M E OF MARKER ROAD, Frederick, MD

Built 1923 Load: 20.9 t ADT: 9,212

MD 39

Fair

Over: CSX TRANSPORTATION

0.05 MILE WEST OF US 219, Garrett, MD

Built 1994 Load: 20.9 t ADT: 5,671

IS 495

Fair

Over: STONEY BROOK DR ROCK CR

0.97 MILE EAST OF MD 185, Montgomery, MD

Built 1964 Load: 20.9 t ADT: 242,821

MD 90

Fair

Over: ASSAWOMAN BAY

1.17 MILES WEST OF MD 528, Worcester, MD

Built 1971 Load: 20.9 t ADT: 30,510

PARADISE STREET

Fair

Over: NEFF RUN

0.14 MI S OF MD 36, Allegany, MD

Built 1994 Load: 20.9 t ADT: 920

TRAPPE ROAD

Fair

Over: TRIBUTARY TO BEAR CREEK

0.8 MI EAST OF MD 157, Baltimore, MD

Built 1970 Load: 20.9 t ADT: 18,600

LIVERPOOL PT ROAD

Fair

Over: BEAVERDAM CREEK

0.1 MI W ADAMS WILLETT RD, Charles, MD

Built 1924 Load: 20.9 t ADT: 409

MERRIMACK PLACE

Fair

Over: DITCHLEY PRONG

0.1 MI E SHILOH CHURCH RD, Charles, MD

Built 1920 Load: 20.9 t ADT: 50

BERBERI ROAD

Fair

Over: TRIBUTARY TO NORTH BRANC

1.3 MI E OF MD 140, Carroll, MD

Built 2005 Load: 20.9 t ADT: 140

FALSTONE AVENUE

Fair

Over: LITTLE FALLS BRANCH

0.1 MI E OF WARWICK AVE, Montgomery, MD

Built 1965 Load: 20.9 t ADT: 50

SOUTH FARM ROAD

Fair

Over: PAINT BRANCH

CAPITAL BELTWAY TO EXIT 2, Prince George's, MD

Built 1955 Load: 20.9 t ADT: 400

IS 95 RAMP E

Fair

Over: I95 NB I95 SB CSX

IS 95 NB EXIT 60, Baltimore city, MD

Built 1974 Load: 20.9 t ADT: 6,819

U.S. ROUTE 40

Fair

Over: SUSQUEHANNA RIVER-PA RR

HARFORD-CECIL CO LINE, Harford, MD

Built 1939 Load: 20.9 t ADT: 25,780

US 40 SCN

Fair

Over: FIFTEEN MILE CREEK

0.19 M E OF BR NO 0113300, Allegany, MD

Built 1917 Load: 21.3 t ADT: 281

IS 95 SBR

Fair

Over: IS 195

0.81 MI N OF HOWARD CO, Baltimore, MD

Built 1970 Load: 21.3 t ADT: 176,796

MD 311

Fair

Over: COOLSPRING BRANCH

0.3 M N OF GOODEN ROAD, Caroline, MD

Built 1952 Load: 21.3 t ADT: 3,230

MD 86

Fair

Over: BR OF GUNPOWDER FALLS

0.24 MI S OF PA LINE, Carroll, MD

Built 1929 Load: 21.3 t ADT: 3,322

MD 32

Fair

Over: LIBERTY RESERVOIR

2.53 MILE SOUTH OF MD 91, Carroll, MD

Built 1952 Load: 21.3 t ADT: 14,020

US 13 NB

Fair

Over: KINGS CREEK

0.18 MILE SOUTH OF MD 920, Somerset, MD

Built 1962 Load: 21.3 t ADT: 20,870

AMMENDALE ROAD

Fair

Over: TRIB TO INDIAN CREEK

0.26 MI W OF US 1, Prince George's, MD

Built 1948 Load: 21.3 t ADT: 1,743

US RTE 50 WB

Fair

Over: CHESAPEAKE BAY

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

Built 1973 Load: 21.3 t ADT: 39,114

MD 100

Fair

Over: MARLEY CREEK

0.79 MILE WEST OF MD 2, Anne Arundel, MD

Built 1964 Load: 21.8 t ADT: 73,112

MD 25

Fair

Over: DEEP RUN

0.05 MILE SOUTH OF MD 130, Baltimore, MD

Built 1961 Load: 21.8 t ADT: 26,821

MD 795

Fair

Over: CAMBRIDGE CREEK

0.04 MI E OF MARKET ST, Dorchester, MD

Built 1938 Load: 21.8 t ADT: 9,422

MD 75

Fair

Over: PLEASANT BRANCH

1.71 MILES N OF MD 355, Frederick, MD

Built 1930 Load: 21.8 t ADT: 7,952

MD 290

Fair

Over: MILL CREEK

0.60 MILE NORTH OF MD 213, Kent, MD

Built 1947 Load: 21.8 t ADT: 2,445

Showing 101-150 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.