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

IS 68 EB

Fair

Over: MD 936

0.86 MILE WEST OF MD 36, Allegany, MD

Built 1972 Load: 40.4 t ADT: 23,640

IS 68 WB

Fair

Over: MD 936

0.86 MI W OF MD 36, Allegany, MD

Built 1972 Load: 40.4 t ADT: 23,640

IS 68 WBR

Fair

Over: MD 53

0.73 MI W OF MD 658, Allegany, MD

Built 1971 Load: 40.4 t ADT: 29,700

IS 595

Fair

Over: WEEMS CREEK

0.67 MI W OF MD 70, Anne Arundel, MD

Built 1953 Load: 40.4 t ADT: 123,940

MD 100 EBR

Fair

Over: OAKWOOD ROAD

0.82 MILE EAST OF MD 3BU, Anne Arundel, MD

Built 1963 Load: 40.4 t ADT: 35,961

MD 2

Fair

Over: MD 665

0.29 MILE SOUTH OF MD 393, Anne Arundel, MD

Built 1991 Load: 40.4 t ADT: 33,251

IS 83 NBR

Fair

Over: OLD PIMLICO ROAD

0.95 MI S OF MD 25, Baltimore, MD

Built 1962 Load: 40.4 t ADT: 96,870

IS 83 SBR

Fair

Over: OLD PIMLICO ROAD

0.95 MI S OF MD 25, Baltimore, MD

Built 1962 Load: 40.4 t ADT: 96,870

IS 695

Fair

Over: MD 41

1.06 MILE NORTH OF MD 542, Baltimore, MD

Built 1961 Load: 40.4 t ADT: 157,940

IS 95 RAMP 3

Fair

Over: IS 695

0.84 MI N OF US 1, Baltimore, MD

Built 1969 Load: 40.4 t ADT: 26,722

MD 7

Fair

Over: MD 43

0.52 M W OF BR NO 0301400, Baltimore, MD

Built 1963 Load: 40.4 t ADT: 16,450

BEACHWOOD ROAD

Fair

Over: MD 695

1.78 MI N OF MD 20D, Baltimore, MD

Built 1970 Load: 40.4 t ADT: 999

MD 695 IL

Fair

Over: AMTRAK

1.12 MILE NORTH OF MD 702, Baltimore, MD

Built 1972 Load: 40.4 t ADT: 74,892

US 15 SB

Fair

Over: LITTLE OWENS CREEK

1.74 MILE NORTH OF MD 550, Frederick, MD

Built 1954 Load: 40.4 t ADT: 14,250

US 29 NB

Fair

Over: FREDERICK ROAD

0.54 MILE SOUTH OF US 40, Howard, MD

Built 1948 Load: 40.4 t ADT: 130,203

IS 70 EB

Fair

Over: MD 97

3.17 MILES EAST OF MD 94, Howard, MD

Built 1973 Load: 40.4 t ADT: 72,612

IS 70 WB

Fair

Over: MD 97

3.17 MILES EAST OF MD 94, Howard, MD

Built 1973 Load: 40.4 t ADT: 72,612

MD 175 EB

Fair

Over: LITTLE PATUXENT RIVER

0.27 MILE NORTH OF US 29, Howard, MD

Built 1974 Load: 40.4 t ADT: 47,121

IS 270

Fair

Over: GR SENECA CR & GAME PRE

1.17 MILES N OF MD 124, Montgomery, MD

Built 1954 Load: 40.4 t ADT: 154,247

FERNWOOD RD

Fair

Over: IS 495

@ IS 495, Montgomery, MD

Built 1962 Load: 40.4 t ADT: 16,350

MD 5 SB

Fair

Over: PISCATAWAY CREEK

2.13 MILES N OF MD 373, Prince George's, MD

Built 1956 Load: 40.4 t ADT: 38,195

IS 95/495

Fair

Over: MD 4

3.48 MILES NORTH OF MD 5, Prince George's, MD

Built 1963 Load: 40.4 t ADT: 201,196

US 13 SB

Fair

Over: MANOKIN RIVER

0.05 MILE NORTH OF MD 363, Somerset, MD

Built 1964 Load: 40.4 t ADT: 22,370

MD 667

Fair

Over: REHOBETH BRANCH

4.96 MILES WEST OF US 13, Somerset, MD

Built 1976 Load: 40.4 t ADT: 2,999

IS 70 EB

Fair

Over: ANTIETAM CREEK

0.57 MILE WEST OF US 40AL, Washington, MD

Built 1968 Load: 40.4 t ADT: 62,740

IS 70 WB

Fair

Over: ANTIETAM CREEK

0.57 MILE WEST OF US 40AL, Washington, MD

Built 1968 Load: 40.4 t ADT: 62,740

US 40

Fair

Over: ANTIETAM CREEK

AT EASTERN BOULEVARD, Washington, MD

Built 1966 Load: 40.4 t ADT: 20,819

MD 374

Fair

Over: LIBERTYTOWN BR

4.01 M E OF WICOMICO CO, Worcester, MD

Built 1931 Load: 40.4 t ADT: 1,030

MANTUA MILL ROAD

Fair

Over: WESTERN RUN

0.1 MI S GREEN RD, Baltimore, MD

Built 1981 Load: 40.4 t ADT: 743

CAREY STREET

Fair

Over: I-170

0.1 MI N OF SARATOGA ST, Baltimore city, MD

Built 1978 Load: 40.4 t ADT: 3,990

LIBERTY HEIGHTS AV

Fair

Over: CSX

0.1 MI E OF LIBERTY MED C, Baltimore city, MD

Built 1916 Load: 40.4 t ADT: 32,811

PILOT TOWN ROAD

Fair

Over: CONOWINGO CREEK

0.61 MI E OF OAKWOOD RD, Cecil, MD

Built 1972 Load: 40.4 t ADT: 878

HAPES MILL ROAD

Fair

Over: BIG PIPE CREEK

1 MI E CROUSE MILL RD, Carroll, MD

Built 1974 Load: 40.4 t ADT: 102

LAUREL GROVE ROAD

Fair

Over: FAULKNER BRANCH

0.3 MILES NW OF MD 313, Caroline, MD

Built 1995 Load: 40.4 t ADT: 1,182

HEAPS ROAD

Fair

Over: BROAD CREEK

0.5 MILES NE OF MD 543, Harford, MD

Built 1979 Load: 40.4 t ADT: 529

CENTENNIAL LANE

Fair

Over: CLARKS CREEK

0.3 MI N MD RTE 108, Howard, MD

Built 1987 Load: 40.4 t ADT: 9,265

RIVER ROAD

Fair

Over: SENECA CREEK

0.5 MI W OF SENECA ROAD, Montgomery, MD

Built 1959 Load: 40.4 t ADT: 3,284

WALKER MILL ROAD

Fair

Over: SOUTHWEST BRANCH

0.18 MI W OF RITCHIE ROAD, Prince George's, MD

Built 1969 Load: 40.4 t ADT: 30,734

CROOM STATION ROAD

Fair

Over: CHARLES BRANCH

1.1 MILES SOUTH OF US 301, Prince George's, MD

Built 1950 Load: 40.4 t ADT: 5,634

BURHANS BOULEVARD

Fair

Over: NORFOLK SOUTHERN RAILROA

0.68 MI N OF VIRGINIA AVE, Washington, MD

Built 1962 Load: 40.4 t ADT: 11,223

I-95

Fair

Over: REDHOUSE RUN

0.6 MI S OF MD 588, Baltimore, MD

Built 1960 Load: 40.4 t ADT: 168,940

I-95 RAMP O

Fair

Over: MDTA YARD WETLANDS

RMP KEITH AVE TO I95S, Baltimore city, MD

Built 1978 Load: 40.4 t ADT: 3,828

MD 24 SB

Fair

Over: I-95

I-95 Milepost M76.4, Harford, MD

Built 1963 Load: 40.4 t ADT: 73,058

MD 313

Fair

Over: CHESTER RIVER

ON KENT CO LINE, Queen Anne's, MD

Built 1961 Load: 40.5 t ADT: 1,964

IS 70 WB

Fair

Over: MD 65

1.35 MILES EAST OF MD 632, Washington, MD

Built 2023 Load: 40.5 t ADT: 60,800

MD 168

Fair

Over: MD 295 NBR

0.49 MI E OF IS 695, Anne Arundel, MD

Built 1949 Load: 40.8 t ADT: 13,660

IS 97

Fair

Over: MD 176 (DORSEY ROAD)

0.78 MI S OF MD 648E, Anne Arundel, MD

Built 1955 Load: 40.8 t ADT: 105,110

EDWIN RAYNOR ROAD

Fair

Over: MD 100

@ MD 100, Anne Arundel, MD

Built 1969 Load: 40.8 t ADT: 19,710

MD 168

Fair

Over: MD 295 SBR

0.49 MI E OF IS 695, Anne Arundel, MD

Built 1949 Load: 40.8 t ADT: 13,660

MD 758

Fair

Over: TRIB TO STONY RUN

WEST OF 195, Anne Arundel, MD

Built 2005 Load: 40.8 t ADT: 700

Showing 1,501-1,550 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.