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

US 113 SB

Fair

Over: US 50

0.43 MILE SOUTH OF MD 818, Worcester, MD

Built 1976 Load: 55.8 t ADT: 12,902

UPPER BECKLEYSVILL

Fair

Over: GEORGES RUN

0.55 MI SW OF MD 25, Baltimore, MD

Built 1930 Load: 55.8 t ADT: 1,381

KELSO DRIVE

Fair

Over: STEMMERS RUN

0.2 MI SW OF ROSSVILLE RD, Baltimore, MD

Built 1988 Load: 55.8 t ADT: 5,707

GREENSPRING AVENUE

Fair

Over: WESTERN RUN

0.1 MI S CROSS COUNTRY BL, Baltimore city, MD

Built 1958 Load: 55.8 t ADT: 20,500

OFF-RAMP I-83 NB T

Fair

Over: JONES FALLS

NB I-83 TO WB N PKWY, Baltimore city, MD

Built 1959 Load: 55.8 t ADT: 23,800

STARNERS DAM ROAD

Fair

Over: MONOCACY RIVER

ON FRED CO LINE, Carroll, MD

Built 1918 Load: 55.8 t ADT: 36

IS 95 RAMP C

Fair

Over: MIDDLE BRANCH

0.6 MI E RUSSELL ST, Baltimore city, MD

Built 1980 Load: 55.8 t ADT: 11,737

I-95 RAMP OT

Fair

Over: PROPOSED CANTON RR TRACK

Milepost M56.2, Baltimore city, MD

Built 1980 Load: 55.8 t ADT: 5,247

IS 68 EB

Fair

Over: MD 948AO FLINTSTONE CRK

0.24 M E OF BR NO 0116200, Allegany, MD

Built 1990 Load: 56.2 t ADT: 18,551

IS 83 NBR

Fair

Over: SHAWAN ROAD WBR

0.91 MI N OF BEAVERDAM RD, Baltimore, MD

Built 1975 Load: 56.2 t ADT: 33,380

IS 83 SBR

Fair

Over: SHAWAN ROAD WBR

0.91 MI N OF BEAVERDAM RD, Baltimore, MD

Built 1975 Load: 56.2 t ADT: 33,380

IS 70 EBR

Fair

Over: IS 70 RAMP A

0.28 MILE EAST OF MD 180, Frederick, MD

Built 1968 Load: 56.2 t ADT: 78,360

IS 95 IL

Fair

Over: BR OF INDIAN CREEK

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

Built 1963 Load: 56.2 t ADT: 211,410

IS 95 OL

Fair

Over: BR OF INDIAN CREEK

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

Built 1963 Load: 56.2 t ADT: 211,410

MD 90

Fair

Over: MD 589

1.58 MILES EAST OF MD 575, Worcester, MD

Built 1973 Load: 56.2 t ADT: 18,062

FISHERS STATION RD

Fair

Over: CABIN BRANCH

0.5 MI E OF MD RTE 4, Anne Arundel, MD

Built 1994 Load: 56.2 t ADT: 158

MONKTON ROAD

Fair

Over: CHARLES RUN

500 FT S SHEPPERD ROAD, Baltimore, MD

Built 1976 Load: 56.2 t ADT: 2,343

CHARMUTH ROAD

Fair

Over: LONG QUARTER BRANCH

0.62 MI N OF MD 146, Baltimore, MD

Built 1959 Load: 56.2 t ADT: 10,087

MANOR ROAD

Fair

Over: PARKER BRANCH

1.4 M SE OF OLD YORK RD, Baltimore, MD

Built 1985 Load: 56.2 t ADT: 4,309

JERICHO ROAD

Fair

Over: TRIBUTARY TO LITTLE GUNP

0.3 MI N FRANKLINVILLE RD, Baltimore, MD

Built 1991 Load: 56.2 t ADT: 527

FALLSWAY VIADUCT

Fair

Over: UNDERGROUND CONDUIT

0.2 MI N MADISON ST, Baltimore city, MD

Built 1930 Load: 56.2 t ADT: 4,050

NORTHERN PKWY ON-R

Fair

Over: MTA LIGHT RAIL

ON RAMP SB I-83, Baltimore city, MD

Built 1959 Load: 56.2 t ADT: 23,800

FRINGER ROAD

Fair

Over: PINEY CREEK

0.08 MI N OF MD 194, Carroll, MD

Built 1930 Load: 56.2 t ADT: 326

LOUISVILLE ROAD

Fair

Over: MIDDLE RUN

0.60 MI S OF DEER PARK RD, Carroll, MD

Built 1974 Load: 56.2 t ADT: 988

MILL GREEN ROAD

Fair

Over: BROAD CREEK

0.03 MILES E OF MD 646, Harford, MD

Built 1988 Load: 56.2 t ADT: 418

CRABBS BRANCH WAY

Fair

Over: METRO ACCESS ROAD

.7 MI S OF SHADY GROVE RD, Montgomery, MD

Built 1983 Load: 56.2 t ADT: 23,523

IS 95 SB COLLECTOR

Fair

Over: DESOTO RD

MILEPOST M52.4, Baltimore city, MD

Built 1976 Load: 56.2 t ADT: 8,964

IS 95 RAMP C

Fair

Over: LIGHT RAIL

0.3 MI E RUSSELL ST, Baltimore city, MD

Built 1977 Load: 56.2 t ADT: 11,737

MD 695A

Fair

Over: NORFOLK SOUTHERN RR

.08 MILE SOUTH OF MD 695B, Baltimore, MD

Built 1937 Load: 56.7 t ADT: 7,360

IS 195 EBR

Fair

Over: US 1

0.58 MI N OF AA CO LINE, Baltimore, MD

Built 1987 Load: 56.7 t ADT: 41,831

MD 140

Fair

Over: RICHARDSON RD

2.69 MILE NORTH OF MD 832, Carroll, MD

Built 1963 Load: 56.7 t ADT: 13,070

MD 267

Fair

Over: RED RUM RUN

0.19 M W OF MARKET STREET, Cecil, MD

Built 1915 Load: 56.7 t ADT: 1,680

MD 806A

Fair

Over: HIGH RUN

0.41 MILE NORTH OF US 15G, Frederick, MD

Built 1950 Load: 56.7 t ADT: 1,072

IS 81 SB

Fair

Over: MAUGANS AVE

1.89 MILES NORTH OF MD 58, Washington, MD

Built 1958 Load: 56.7 t ADT: 52,330

IS 70 EB

Fair

Over: CSX TRANS.

0.53 MILE WEST OF IS 81, Washington, MD

Built 1965 Load: 56.7 t ADT: 22,150

IS 70 WB

Fair

Over: CSX TRANS.

0.53 MILE WEST OF IS 81, Washington, MD

Built 1965 Load: 56.7 t ADT: 23,600

RIVA ROAD

Fair

Over: SOUTH RIVER

2 MI SOUTH OF MD 665, Anne Arundel, MD

Built 1959 Load: 56.7 t ADT: 10,210

EBENEZER ROAD

Fair

Over: AMTRAK RAILROAD

0.1 MI NW EASTERN AVE EXT, Baltimore, MD

Built 1982 Load: 56.7 t ADT: 11,290

HILLEN ROAD

Fair

Over: TRIBUTARY TO HERRING RUN

0.4 MI S NORTHERN PKWY, Baltimore city, MD

Built 1962 Load: 56.7 t ADT: 9,115

ASHLAND ROAD

Fair

Over: WESTERN RUN

0.2 MI E YORK RD, Baltimore city, MD

Built 1922 Load: 56.7 t ADT: 9,956

BAPTIST ROAD

Fair

Over: ALLOWAY CREEK

0.11 MI N OF STARNERS DAM, Carroll, MD

Built 1911 Load: 56.7 t ADT: 269

TEETER ROAD

Fair

Over: PINEY CREEK

0.54 MI WEST OF MD 194, Carroll, MD

Built 1910 Load: 56.7 t ADT: 236

SLACKS ROAD

Fair

Over: PINEY RUN

0.80 MI N RAINCLIFFE ROAD, Carroll, MD

Built 1975 Load: 56.7 t ADT: 905

ROHRBAUGH ROAD

Fair

Over: GRAVE RUN

ROHRBAUGH RD 0.36, Carroll, MD

Built 1976 Load: 56.7 t ADT: 148

STOTTLEMYER ROAD

Fair

Over: MIDDLE CREEK

0.1 MI NE OF MD 17, Frederick, MD

Built 1977 Load: 56.7 t ADT: 1,456

BRIGHTON DAM ROAD

Fair

Over: REDDY BRANCH

0.9 MI E OF JCT SR 97, Montgomery, MD

Built 1910 Load: 56.7 t ADT: 743

I-395 NB SPUR

Fair

Over: RUSSELL STREET

Milepost M3.6, Baltimore city, MD

Built 1980 Load: 56.7 t ADT: 27,885

MD 47

Fair

Over: BRANCH OF NORTH BRANCH

0.09 MI S OF PA LINE, Allegany, MD

Built 1923 Load: 57.1 t ADT: 2,042

MD 648E

Fair

Over: PATAPSCO RIVER

ON BALTIMORE COUNTY LINE, Anne Arundel, MD

Built 1992 Load: 57.1 t ADT: 12,630

MD 43 EBR

Fair

Over: US 40

0.39 MILE EAST OF MD 7, Baltimore, MD

Built 1968 Load: 57.1 t ADT: 8,100

Showing 2,551-2,600 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.