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 90

Fair

Over: MD 575

0.4 MILE EAST OF US 113, Worcester, MD

Built 1976 Load: 34.9 t ADT: 14,132

PROENTY ROAD

Fair

Over: JENNINGS RUN

0.02 MI S OF MD 36, Allegany, MD

Built 1926 Load: 34.9 t ADT: 1,125

SMOUSES MILL ROAD

Fair

Over: EVITTS CREEK

0.67 MI S OF US 220, Allegany, MD

Built 2002 Load: 34.9 t ADT: 238

SPA ROAD

Fair

Over: SPA CREEK

0.5 MI N OF FOREST DRIVE, Anne Arundel, MD

Built 1970 Load: 34.9 t ADT: 5,131

I-83 RAMP B

Fair

Over: PARKING LOTS

0.2 MI N OF MADISON ST, Baltimore city, MD

Built 1976 Load: 34.9 t ADT: 8,794

PENNINGTON AVENUE

Fair

Over: CABIN BRANCH

1.5 MI S PATAPSCO AVE, Baltimore city, MD

Built 1986 Load: 34.9 t ADT: 13,500

SAVAGE RIVER ROAD

Fair

Over: SAVAGE RIVER

0.78 MI S WESTERNPORT RD, Garrett, MD

Built 2001 Load: 34.9 t ADT: 610

OAKLAND-ROSEDALE R

Fair

Over: LITTLE YOUGHIOGHENY RIVE

0.14 MI NORTH OF MD 39, Garrett, MD

Built 2004 Load: 34.9 t ADT: 1,070

ORENDORF ROAD

Fair

Over: NORTH BRANCH CASSELMAN R

SOUTH OF US 40, Garrett, MD

Built 1988 Load: 34.9 t ADT: 100

TAYLOR ROAD

Fair

Over: BROAD CREEK

0.7 MILES E OF MD 543, Harford, MD

Built 1974 Load: 34.9 t ADT: 44

CARROLL MILL ROAD

Fair

Over: MIDDLE PATUXENT RIVER

0.4 MI W OF FOLLY QUARTER, Howard, MD

Built 1975 Load: 34.9 t ADT: 1,346

WATKINS MILL ROAD

Fair

Over: CABIN BRANCH

.4 MI S OF APPLE RIDGE RD, Montgomery, MD

Built 1990 Load: 34.9 t ADT: 12,768

FOREST GLEN ROAD

Fair

Over: SLIGO CREEK

0.6 MI EAST OF MD 97, Montgomery, MD

Built 1974 Load: 34.9 t ADT: 12,150

FRENCHTOWN ROAD

Fair

Over: MINE CREEK

1.0 MI SE OF RUMBLEY, Somerset, MD

Built 1984 Load: 34.9 t ADT: 64

CAMPBELLTOWN ROAD

Fair

Over: BIRCH BRANCH

1.55 MI S OF MD 610, Worcester, MD

Built 1994 Load: 34.9 t ADT: 275

SECOND LEVEL ENTRA

Fair

Over: SOUTH END OF CONSOLIDATE

CRCF - BWI AIRPORT, Anne Arundel, MD

Built 2003 Load: 34.9 t ADT: 113

I-895 NB

Fair

Over: HAMMONDS FERRY RD

Milepost M3.8, Baltimore, MD

Built 1957 Load: 34.9 t ADT: 10,671

I-895 SB

Fair

Over: HAMMONDS FERRY RD

I-895 SB Milepost 3.8, Baltimore, MD

Built 1957 Load: 34.9 t ADT: 10,334

I-895

Fair

Over: HANOVER ST

Milepost M7.06, Baltimore city, MD

Built 1957 Load: 34.9 t ADT: 74,587

I-895 SB

Fair

Over: B&O RR COUNTY ROADS

Milepost 0.7, Howard, MD

Built 1972 Load: 34.9 t ADT: 6,015

US 40 ALT

Fair

Over: BRADDOCK RUN

0.08 MILE EAST OF MD 53, Allegany, MD

Built 1947 Load: 35.4 t ADT: 12,812

MD 2

Fair

Over: SOUTH RIVER

0.86MI N OF MD 253, Anne Arundel, MD

Built 1983 Load: 35.4 t ADT: 53,221

MD 665 WB

Fair

Over: CHURCH CREEK

0.29 MILE EAST OF MD 2, Anne Arundel, MD

Built 1991 Load: 35.4 t ADT: 28,680

MD 7

Fair

Over: GUNPOWDER FALLS

1.74 MI S OF HARFORD CO, Baltimore, MD

Built 1987 Load: 35.4 t ADT: 8,863

MD 41

Fair

Over: TRIB TO HERRING RUN

0.95 MI N OF BALT CITY, Baltimore, MD

Built 1963 Load: 35.4 t ADT: 29,990

IS 95 RAMP E

Fair

Over: IS 195 SBR

0.79 MI N OF HOWARD CO, Baltimore, MD

Built 1970 Load: 35.4 t ADT: 6,452

MD 146

Fair

Over: LOCH RAVEN RESERVOIR

0.48 M N OF OLD BOSLEY RD, Baltimore, MD

Built 1976 Load: 35.4 t ADT: 20,421

MD 4 NB

Fair

Over: HALL CREEK

.442 M N OF MT HARMONY RD, Calvert, MD

Built 1966 Load: 35.4 t ADT: 35,171

MD 4 SB

Fair

Over: HALL CREEK

.442 M N OF MT HARMONY RD, Calvert, MD

Built 1929 Load: 35.4 t ADT: 35,171

MD 77

Fair

Over: BIG PIPE CREEK

1.52 MILE WEST OF MD 194, Carroll, MD

Built 1977 Load: 35.4 t ADT: 841

MD 229

Fair

Over: OLD WOMANS RUN

0.6 MILE EAST OF MD 227, Charles, MD

Built 1939 Load: 35.4 t ADT: 3,581

MD 144FA

Fair

Over: MONOCACY RIVER

1.04 MILE EAST OF IS 70, Frederick, MD

Built 1955 Load: 35.4 t ADT: 13,861

MD 77

Fair

Over: BR OF HUNTING CREEK

2.72 MI E OF WASH CO, Frederick, MD

Built 1971 Load: 35.4 t ADT: 3,271

IS 270

Fair

Over: MD 117

0.62 MILE SOUTH OF MD 124, Montgomery, MD

Built 1954 Load: 35.4 t ADT: 171,940

MD 410

Fair

Over: BRANCH OF ROCK CREEK

0.34 MILE WEST OF MD 390, Montgomery, MD

Built 1929 Load: 35.4 t ADT: 26,931

MD 547

Fair

Over: ROCK CREEK

0.66 MILE WEST OF MD 185, Montgomery, MD

Built 1932 Load: 35.4 t ADT: 10,982

IS 95 IL

Fair

Over: GOOD LUCK ROAD

1.15 MILES S OF MD 295, Prince George's, MD

Built 1963 Load: 35.4 t ADT: 204,147

GLENARDEN PKWY

Fair

Over: IS 95

0.93 MI N OF MD 202, Prince George's, MD

Built 1964 Load: 35.4 t ADT: 2,745

MD 213

Fair

Over: GRANNY FINLEY BRANCH

2.9 MILES SOUTH OF MD 19A, Queen Anne's, MD

Built 1910 Load: 35.4 t ADT: 6,761

MD 5

Fair

Over: FISHERMAN CREEK

0.31 MILE NORTH OF MD 584, St. Mary's, MD

Built 1936 Load: 35.4 t ADT: 7,244

MD 245

Fair

Over: BROOKS RUN

1.71 MILES S OF MD 235, St. Mary's, MD

Built 1950 Load: 35.4 t ADT: 8,324

US 50

Fair

Over: TRIB TO POTTS MILL CREEK

1.26 MILES E OF MD 662B, Talbot, MD

Built 1945 Load: 35.4 t ADT: 31,938

US 40

Fair

Over: LANDIS SPRING BRANCH

0.61 MILE EAST OF IS 70, Washington, MD

Built 1936 Load: 35.4 t ADT: 10,742

MD 60

Fair

Over: MARSH RUN

2.87 MILES WEST OF MD 62, Washington, MD

Built 1900 Load: 35.4 t ADT: 12,172

IS 70 EB

Fair

Over: US 40 ALT

1.07 MILES WEST OF US 40, Washington, MD

Built 1965 Load: 35.4 t ADT: 62,740

IS 70 WB

Fair

Over: US 40 ALT

1.07 MILES WEST OF US 40, Washington, MD

Built 1965 Load: 35.4 t ADT: 62,740

CUB HILL ROAD

Fair

Over: TRIBUTARY TO GUNPOWDER F

0.2 MI E OF CROMWELL BR R, Baltimore, MD

Built 1920 Load: 35.4 t ADT: 7,580

BEETREE ROAD

Fair

Over: BEETREE RUN

1.4 MI W OF MD RTE 45, Baltimore, MD

Built 1979 Load: 35.4 t ADT: 87

RUTHERFORD ROAD

Fair

Over: DEAD RUN

0.38 MI S OF WINDSOR BLVD, Baltimore, MD

Built 1968 Load: 35.4 t ADT: 3,998

I-83 NB OFF-RAMP T

Fair

Over: MTA LIGHT RAIL

0.9 MI N OF NORTH AVE, Baltimore city, MD

Built 1957 Load: 35.4 t ADT: 25,265

Showing 1,051-1,100 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.