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

IS 68 EB

Fair

Over: MD 742

0.33 MILE EAST OF MD 42, Garrett, MD

Built 1974 Load: 64.4 t ADT: 12,240

IS 95/495 RAMPS E&

Fair

Over: IS 295 RAMP O

0.34 M S OF BR NO 1621900, Prince George's, MD

Built 1990 Load: 64.4 t ADT: 22,062

OAKLAWN AVENUE

Fair

Over: BRADDOCK RUN

0.20 MI NE OF US 40 ALT, Allegany, MD

Built 1900 Load: 64.4 t ADT: 135

SINCLAIR LANE

Fair

Over: HERRING RUN

1 MI E ERDMAN AVE, Baltimore city, MD

Built 1958 Load: 64.4 t ADT: 37,800

MARRIOTTSVILLE RD

Fair

Over: PINEY RUN

0.13 MI N HOWARD CO LINE, Carroll, MD

Built 1977 Load: 64.4 t ADT: 12,255

SAVAGE RIVER ROAD

Fair

Over: SAVAGE RIVER

2.1 MI E SPRING LICK RD, Garrett, MD

Built 1976 Load: 64.4 t ADT: 260

DEER CREEK CHURCH

Fair

Over: STOUT BOTTLE BRANCH

0.5 MIL SW OF WALTERS M R, Harford, MD

Built 1964 Load: 64.4 t ADT: 347

LITTLE FALLS PARKW

Fair

Over: WILLET BRANCH

0.1 MI S OF HILLANDALE RD, Montgomery, MD

Built 1958 Load: 64.4 t ADT: 17,373

NORTH SCHUMAKER DR

Fair

Over: BEAVERDAM CREEK

1.34 MI S OF MD 350, Wicomico, MD

Built 1992 Load: 64.4 t ADT: 643

US 40 EBR

Fair

Over: GUNPOWDER FALLS

0.31 MI W OF JONES RD, Baltimore, MD

Built 1935 Load: 64.8 t ADT: 14,805

US 40 WBR

Fair

Over: GUNPOWDER FALLS

0.31 MI W OF JONES RD, Baltimore, MD

Built 1935 Load: 64.8 t ADT: 14,805

MD 122

Fair

Over: IS 695 RAMP 1

0.45 MI N OF IS 70, Baltimore, MD

Built 1961 Load: 64.9 t ADT: 34,910

MD 77

Fair

Over: HUNTING CREEK

1.15 M W OF PRYOR ROAD, Frederick, MD

Built 1970 Load: 64.9 t ADT: 3,271

US 301

Fair

Over: MATTAWOMAN CREEK

ON CHARLES CO LINE, Prince George's, MD

Built 1950 Load: 64.9 t ADT: 73,212

IS 81 NB

Fair

Over: NORFOLK SOUTHERN RR

0.57 MILE NORTH OF MD 58, Washington, MD

Built 1958 Load: 64.9 t ADT: 63,000

IS 81 SB

Fair

Over: NORFOLK SOUTHERN RR

0.57 MILE NORTH OF MD 58, Washington, MD

Built 1958 Load: 64.9 t ADT: 63,000

KERNAN DRIVE

Fair

Over: DEAD RUN

50 FT E SECURITY BLVD, Baltimore, MD

Built 1948 Load: 64.9 t ADT: 11,216

RUXTON ROAD

Fair

Over: ROLAND RUN

0.42 MI E OF MD 134, Baltimore, MD

Built 1959 Load: 64.9 t ADT: 6,375

MULBERRY STREET

Fair

Over: PEARL STREET

0.1 MI W OF PACA ST, Baltimore city, MD

Built 1975 Load: 64.9 t ADT: 22,594

I-83 RAMP C

Fair

Over: I-83 RAMP E

0.4 MI N OF NORTH AVE, Baltimore city, MD

Built 1959 Load: 64.9 t ADT: 23,600

NOVA SCOTIA ROAD

Fair

Over: JAMES RUN

0.6 MILES E OF MD 543, Harford, MD

Built 1930 Load: 64.9 t ADT: 275

HARFORD CREAMERY R

Fair

Over: JACKSON BRANCH

0.3 MILES S OF MD 23, Harford, MD

Built 1979 Load: 64.9 t ADT: 81

VIRGINIA AVENUE

Fair

Over: NORFOLK SOUTHERN RAILROA

100 FT S OF W WILSON BLVD, Washington, MD

Built 1983 Load: 64.9 t ADT: 14,139

ROYAL OAK ROAD

Fair

Over: DENNIS CREEK

0.4 MI NW OF MD RTE 349, Wicomico, MD

Built 1995 Load: 64.9 t ADT: 735

MD 948AE

Fair

Over: IS 68 ELK LICK RUN

0.04 MILE NORTH OF MD 144, Allegany, MD

Built 1990 Load: 65.3 t ADT: 99

IS 83

Fair

Over: WESTERN RUN

0.81 M S OF BR NO 0305600, Baltimore, MD

Built 1953 Load: 65.3 t ADT: 60,263

MD 97

Fair

Over: MORGAN RUN

3.14 MILE SOUTH OF MD 32, Carroll, MD

Built 1959 Load: 65.3 t ADT: 15,140

US 15 RAMP J

Fair

Over: HUNTING CREEK

0.03 MI S OF MD 77, Frederick, MD

Built 1985 Load: 65.3 t ADT: 500

MD 100 RAMP A

Fair

Over: IS 95

0.79 MILE WEST OF US 1, Howard, MD

Built 1970 Load: 65.3 t ADT: 15,864

GORMAN ROAD

Fair

Over: IS 95

0.96 MI N OF MD 216, Howard, MD

Built 1970 Load: 65.3 t ADT: 8,371

IS 495 RAMP E(10)

Fair

Over: CABIN JOHN CREEK

0.12 MI W OF IS 495X, Montgomery, MD

Built 1964 Load: 65.3 t ADT: 11,731

IS 495 IL

Fair

Over: PAINT BRANCH

1.42 M E OF MONTGOMERY CO, Prince George's, MD

Built 1964 Load: 65.3 t ADT: 139,680

MILFORD MILL ROAD

Fair

Over: GWYNNS FALLS

250 FT E SCOTTS HILL DR, Baltimore, MD

Built 1983 Load: 65.3 t ADT: 24,976

COLDSPRING LANE RA

Fair

Over: JONES FALLS

COLDSPRING AT I-83, Baltimore city, MD

Built 1962 Load: 65.3 t ADT: 34,824

OLD ANNAPOLIS ROAD

Fair

Over: LITTLE PATUXENT RIVER

0.04 MI W CO 76 & MD 108, Howard, MD

Built 1987 Load: 65.3 t ADT: 7,285

WARING STATION ROA

Fair

Over: CSXT RAILROAD

0.5 MI NORTH OF MD 117, Montgomery, MD

Built 1986 Load: 65.3 t ADT: 6,897

WHITES FERRY ROAD

Fair

Over: BROAD RUN

3 MILES WEST OF MD 109, Montgomery, MD

Built 1931 Load: 65.3 t ADT: 1,988

SANDY HOOK ROAD

Fair

Over: CSXT RAILROAD

1.0 MI W OF US RTE 340, Washington, MD

Built 1925 Load: 65.3 t ADT: 1,727

IS 270 NB

Fair

Over: MD 80

3.52 MILES N OF MONT CO, Frederick, MD

Built 1950 Load: 65.8 t ADT: 81,890

MD 39

Fair

Over: LITTLE YOUGHIOGHENY RIVE

0.19 MILE WEST OF US 219, Garrett, MD

Built 1921 Load: 65.8 t ADT: 5,572

IS 95 IL

Fair

Over: INDIAN CREEK

0.74 MILE NORTH OF MD 201, Prince George's, MD

Built 1963 Load: 65.8 t ADT: 211,410

BERNADETTE DRIVE

Fair

Over: BEAR CABIN BRANCH

0.8 MIL E OF GRAFTON SHOP, Harford, MD

Built 1970 Load: 65.8 t ADT: 869

I-95 NB

Fair

Over: FRENCHTOWN RD

0.8 MI N OF SUSQUEHANNA R, Cecil, MD

Built 1963 Load: 65.8 t ADT: 38,081

MD 3C

Fair

Over: IS 97

2.57 M N OF MD 32, Anne Arundel, MD

Built 1990 Load: 66.2 t ADT: 27,710

IS 97 NBR

Fair

Over: CROWNSVILLE ROAD

0.7 MI N OF MD 450, Anne Arundel, MD

Built 1987 Load: 66.2 t ADT: 91,300

IS 97 SBR

Fair

Over: CROWNSVILLE ROAD

0.71 MILE NORTH OF MD 450, Anne Arundel, MD

Built 1987 Load: 66.2 t ADT: 91,300

US 1

Fair

Over: NORFOLK SOUTHERN RR

0.02 MILE NORTH OF MD 222, Cecil, MD

Built 1931 Load: 66.2 t ADT: 9,652

MD 190

Fair

Over: MUDDY BRANCH

0.98 M E OF PETTIT WAY, Montgomery, MD

Built 1954 Load: 66.2 t ADT: 3,592

MD 212

Fair

Over: NORTHWEST BRANCH

0.73 MILE NORTH OF MD 193, Prince George's, MD

Built 1932 Load: 66.2 t ADT: 20,911

WEYBURN ROAD

Fair

Over: REDHOUSE RUN

300 FT W. OF ELLINWOOD RD, Baltimore, MD

Built 1963 Load: 66.2 t ADT: 4,687

Showing 2,851-2,900 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.