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

I-95

Fair

Over: GRAYS RUN

Milepost M83.1, Harford, MD

Built 1963 Load: 32.7 t ADT: 116,162

I-95

Fair

Over: SUSQUEHANNA RIVER PA RR

HARFORD-CECIL CO LINE, Harford, MD

Built 1963 Load: 32.7 t ADT: 86,430

EDWARDS FERRY ROAD

Fair

Over: C&O CANAL

0.1 miles north of Potoma, Montgomery, MD

Built 1950 Load: 32.7 t ADT: 50

MD ROUTE 198 (EBL)

Fair

Over: BW PARKWAY (NBL)

3.4 MILES FROM MD ROUTE 1, Anne Arundel, MD

Built 1991 Load: 32.7 t ADT: 39,154

MD ROUTE 198 (EBL)

Fair

Over: BW PARKWAY (SBL)

3.4 MILES NORTH OF MD ROU, Anne Arundel, MD

Built 1991 Load: 32.7 t ADT: 39,150

BW PARKWAY (SBL)

Fair

Over: BEAVERDAM CREEK

1.1 MILES NORTH OF MD ROU, Prince George's, MD

Built 1966 Load: 32.7 t ADT: 40,000

BW PARKWAY (NBL)

Fair

Over: BEAVERDAM CREEK

1.1 MILES NORTH OF MD ROU, Prince George's, MD

Built 1966 Load: 32.7 t ADT: 40,000

MD ROUTE 198 (WBL)

Fair

Over: BW PARKWAY (NBL)

3.4 MILES NORTH OF MD ROU, Anne Arundel, MD

Built 1991 Load: 32.7 t ADT: 44,000

MD ROUTE 198 (WBL)

Fair

Over: BW PARKWAY (SBL)

3.4 MILES NORTH OF MD ROU, Anne Arundel, MD

Built 1991 Load: 32.7 t ADT: 44,000

BW PARKWAY

Fair

Over: BEAVERDAM CREEK

0.1 MILES NORTH OF BEAVER, Prince George's, MD

Built 1953 Load: 32.7 t ADT: 80,000

BW PARKWAY

Fair

Over: STREAM

0.5 MILES NORTH OF MD ROU, Prince George's, MD

Built 1953 Load: 32.7 t ADT: 80,000

SIMONDS STREET

Fair

Over: MIDWAY BRANCH

.03 MI W LEONARD WOOD AVE, Anne Arundel, MD

Built 1984 Load: 32.7 t ADT: 150

REDWOOD ROAD

Fair

Over: S SIDE FRANKLIN BRANCH

0.24 MI. N OF ROCK AVE, Anne Arundel, MD

Built 1944 Load: 32.7 t ADT: 120

LEONARD WOOD AVE

Fair

Over: MIDWAY BRANCH

0.10 MILES N ROCK AVE, Anne Arundel, MD

Built 1946 Load: 32.7 t ADT: 200

VICTORY POST DRIVE

Fair

Over: GEORGES CREEK

0.04 MI N OF MD 937, Allegany, MD

Built 1950 Load: 33.1 t ADT: 1,599

IS 695

Fair

Over: IS 83 NBR

0.62 MILE SOUTH OF MD 139, Baltimore, MD

Built 1955 Load: 33.1 t ADT: 179,082

ELMER DERR ROAD

Fair

Over: US 15

0.7 MI W OF US 340, Frederick, MD

Built 1969 Load: 33.1 t ADT: 999

US 29 NB

Fair

Over: LITTLE PATUXENT RIVER

1.62 MILES S OF MD 175, Howard, MD

Built 1971 Load: 33.1 t ADT: 73,292

MD 216 EB

Fair

Over: IS 95

1.56 MILES N OF PG CO, Howard, MD

Built 1970 Load: 33.1 t ADT: 20,412

MD 216 WB

Fair

Over: IS 95

1.56 MILES N OF PG CO, Howard, MD

Built 1970 Load: 33.1 t ADT: 20,412

MD 650

Fair

Over: HAWLINGS RIVER

1.88 MILES N OF MD 108, Montgomery, MD

Built 1929 Load: 33.1 t ADT: 7,660

IS 495X

Fair

Over: CABIN JOHN CREEK

0.22 MILE NORTH OF GV 6, Montgomery, MD

Built 1964 Load: 33.1 t ADT: 19,820

IS 95 IL

Fair

Over: CSX TRANS & WMATA

1.12 MILES N OF MD 201, Prince George's, MD

Built 1963 Load: 33.1 t ADT: 96,390

IS 95 OL

Fair

Over: CSX TRANS & WMATA

1.12 MILES N OF MD 201, Prince George's, MD

Built 1963 Load: 33.1 t ADT: 96,390

MD 544

Fair

Over: PEARL CREEK

1.06 MILE SOUTH OF MD 290, Queen Anne's, MD

Built 1971 Load: 33.1 t ADT: 2,751

US 50/301

Fair

Over: KENT ISLAND NARROW

0.59 MILE WEST OF MD 835, Queen Anne's, MD

Built 1990 Load: 33.1 t ADT: 65,701

MD 242

Fair

Over: BR OF ST CLEMENTS CREEK

0.58 MILE SOUTH OF MD 5, St. Mary's, MD

Built 1951 Load: 33.1 t ADT: 2,431

US 113 BU

Fair

Over: PURNELL BRANCH

0.39 MILE S OF US 113, Worcester, MD

Built 1952 Load: 33.1 t ADT: 7,120

US 113 SB

Fair

Over: PILCHARD CREEK

0.68 MILE NORTH OF MD 756, Worcester, MD

Built 1969 Load: 33.1 t ADT: 2,751

SCHROEDER STREET

Fair

Over: I-170

0.1 MI N OF SARATOGA ST, Baltimore city, MD

Built 1977 Load: 33.1 t ADT: 1,752

MILL RUN ROAD

Fair

Over: MILL RUN

1.6 M NE FRNDSVLLEADDISON, Garrett, MD

Built 1950 Load: 33.1 t ADT: 29

RECKORD ROAD

Fair

Over: WILDCAT BRANCH

0.1 MILES S OF US 1, Harford, MD

Built 1957 Load: 33.1 t ADT: 961

HESS ROAD

Fair

Over: YELLOW BRANCH

0.5 MILES E OF MD 146, Harford, MD

Built 1950 Load: 33.1 t ADT: 8,065

SOUTH DIVISION STR

Fair

Over: EAST BRANCH OF WICOMICO

0.2 MI S OF US 50 BUS, Wicomico, MD

Built 1981 Load: 33.1 t ADT: 2,764

HAMMONDS LANE

Fair

Over: I-895 Spur

I-895 NB Milepost B1.12, Anne Arundel, MD

Built 1957 Load: 33.1 t ADT: 7,776

IS 95 RAMP D

Fair

Over: UTILITY ACCESS RD

Milepost M57.1, Baltimore city, MD

Built 1980 Load: 33.1 t ADT: 6,591

IS 95 SB

Fair

Over: DUNDALK AVE KANE ST

0.4 MI. S OF EASTERN AVE., Baltimore city, MD

Built 1976 Load: 33.1 t ADT: 76,836

I-395 NB

Fair

Over: OSTEND ST/LOTS G&H

Milepost 1.1, Baltimore city, MD

Built 1981 Load: 33.1 t ADT: 26,190

MD 51

Fair

Over: C&O CANAL

0.64 MI W OF W VA LINE, Allegany, MD

Built 1932 Load: 33.4 t ADT: 1,642

US 220

Fair

Over: N POTOMAC RIVER MD 135

ON WEST VIRGINIA LINE, Allegany, MD

Built 2012 Load: 33.6 t ADT: 16,452

MD 176

Fair

Over: PINEY RUN

0.47 MI E OF MD 295, Anne Arundel, MD

Built 1949 Load: 33.6 t ADT: 2,452

IS 97

Fair

Over: MD 648E MTA LIGHT RAIL

0.78 MILE NORTH OF MD 176, Anne Arundel, MD

Built 1955 Load: 33.6 t ADT: 124,594

IS 83 NBR

Fair

Over: BUNKER HILL ROAD

1.08 MI N OF MD 137, Baltimore, MD

Built 1955 Load: 33.6 t ADT: 59,820

MD 147

Fair

Over: GUNPOWDER FALLS

0.03 MI S OF NOTCH CLIFF, Baltimore, MD

Built 1929 Load: 33.6 t ADT: 7,982

IS 95 SBR & RAMP

Fair

Over: SULPHUR SPRING ROAD

0.32 MILE SOUTH OF IS 695, Baltimore, MD

Built 1971 Load: 33.6 t ADT: 176,796

MD 75

Fair

Over: BUSH CREEK

.65 MILE SOUTH OF MD 75FB, Frederick, MD

Built 1972 Load: 33.6 t ADT: 6,492

MD 132B

Fair

Over: AMTRAK

0.03 MILE SOUTH OF US 40, Harford, MD

Built 1943 Load: 33.6 t ADT: 3,563

MD 201

Fair

Over: CSX TRANS.

0.12 MILE NORTH OF MD 459, Prince George's, MD

Built 1953 Load: 33.6 t ADT: 32,080

MD 4 NB

Fair

Over: MD 980D

1.52 MILES N OF MD 717, Prince George's, MD

Built 1959 Load: 33.6 t ADT: 50,961

MD 313

Fair

Over: UNICORN BRANCH

0.92 MILE NORTH OF MD 544, Queen Anne's, MD

Built 1924 Load: 33.6 t ADT: 1,970

Showing 901-950 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.