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

RUSSELL ST

Fair

Over: GWYNNS FALLS MANOKIN ST

0.3 MI S IS 95, Baltimore city, MD

Built 1963 Load: 34.0 t ADT: 51,578

BARTHOLOW ROAD

Fair

Over: LITTLE MORGAN RUN

1.73 MILES N OF MD 32, Carroll, MD

Built 1968 Load: 34.0 t ADT: 4,061

FALLING BRANCH RD

Fair

Over: FALLING BRANCH

0.7 MI NE OF RED BRIDGE R, Harford, MD

Built 1973 Load: 34.0 t ADT: 25

ROBLEE DRIVE

Fair

Over: BACK BRANCH

1.0 MILE NORTH OF MD 4, Prince George's, MD

Built 1968 Load: 34.0 t ADT: 3,200

PECTONVILLE ROAD

Fair

Over: LICKING CREEK

1.25 MI N OF US RTE 40, Washington, MD

Built 1982 Load: 34.0 t ADT: 475

IS 95 RAMP A

Fair

Over: CSX

MILEPOST 60.0, Baltimore city, MD

Built 1973 Load: 34.0 t ADT: 6,464

I-895

Fair

Over: POTEE STREET

Milepost M6.95, Baltimore city, MD

Built 1957 Load: 34.0 t ADT: 74,587

EASTERN AVENUE

Fair

Over: I-895

MILE POINT 12.21, Baltimore city, MD

Built 1957 Load: 34.0 t ADT: 27,690

UNION CHURCH ROAD

Fair

Over: I-95

M102.4, Cecil, MD

Built 1964 Load: 34.0 t ADT: 2,408

IS 68 WBR

Fair

Over: MD 55

1.53 MILE EAST OF MD 36, Allegany, MD

Built 1973 Load: 34.5 t ADT: 26,410

IS 695 RAMP G

Fair

Over: MTA LIGHT RAIL

0.04 MI N OF MD 170, Anne Arundel, MD

Built 1967 Load: 34.5 t ADT: 2,874

MD 30

Fair

Over: MARYLAND MIDLAND RR

0.62 MILE NORTH OF MD 795, Baltimore, MD

Built 1936 Load: 34.5 t ADT: 18,070

IS 695 & RAMPS 4

Fair

Over: DEAD RUN

0.19 M N OF CROSBY ROAD, Baltimore, MD

Built 1961 Load: 34.5 t ADT: 188,860

IS 70 WBR

Fair

Over: ROLLING ROAD

0.54 MILE WEST OF IS 695, Baltimore, MD

Built 1964 Load: 34.5 t ADT: 94,221

MD 222

Fair

Over: CSX TRANS.

0.32 MILE NORTH OF US 40, Cecil, MD

Built 1990 Load: 34.5 t ADT: 13,680

MD 75

Fair

Over: FAHRNEY BRANCH

0.43 MILE SOUTH OF MD 80, Frederick, MD

Built 1933 Load: 34.5 t ADT: 7,952

MD 410

Fair

Over: CSXT WMATA

0.09 MILE EAST OF US 29, Montgomery, MD

Built 1975 Load: 34.5 t ADT: 14,001

IS 95X NB

Fair

Over: IS 495 IL TRIB PAINT BR

0.03 MNS OF BR NO 1612200, Prince George's, MD

Built 1967 Load: 34.5 t ADT: 3,760

ARDWICK-ARDMORE RD

Fair

Over: IS 95

@ IS 95, Prince George's, MD

Built 1958 Load: 34.5 t ADT: 13,595

MD 198 WB

Fair

Over: IS 95 RAMP B

1.59 MILES WEST OF MD 216, Prince George's, MD

Built 1971 Load: 34.5 t ADT: 49,801

MD 5

Fair

Over: GLEBE RUN

0.11 MILE SOUTH OF MD 4, St. Mary's, MD

Built 1955 Load: 34.5 t ADT: 12,500

MD 5

Fair

Over: CHURCH CREEK

2.4 MILES SOUTH OF MD 584, St. Mary's, MD

Built 1936 Load: 34.5 t ADT: 4,400

MD 90

Fair

Over: NORFOLK SOUTHERN RR

2.19 MILES EAST OF MD 346, Worcester, MD

Built 1976 Load: 34.5 t ADT: 8,118

WOODLAWN DRIVE

Fair

Over: DEAD RUN

0.87 MI N OF IS 70, Baltimore, MD

Built 1960 Load: 34.5 t ADT: 18,500

TOM DAY BOULEVARD

Fair

Over: EAST BRANCH HERBERT RUN

0.02 MI W OF US 1, Baltimore, MD

Built 1960 Load: 34.5 t ADT: 3,484

NORTHERN PKWY RAMP

Fair

Over: I-83

WB RAMP FROM N PKWY, Baltimore city, MD

Built 1959 Load: 34.5 t ADT: 5,350

PENNINGTON AVENUE

Fair

Over: CABIN BRANCH

1.5 MI S PATAPSCO AVE, Baltimore city, MD

Built 1986 Load: 34.5 t ADT: 13,500

TRACEYS MILL ROAD

Fair

Over: SOUTH BR GUNPOWDER FALLS

0.44 MI, Carroll, MD

Built 1978 Load: 34.5 t ADT: 1,104

ROCK RUN ROAD

Fair

Over: ROCK RUN

0.01 MI E OF WILKINSON RD, Harford, MD

Built 1955 Load: 34.5 t ADT: 154

MUIRKIRK ROAD

Fair

Over: US 1 & CSXT

MUIRKIRK ROAD AT US 1, Prince George's, MD

Built 1970 Load: 34.5 t ADT: 22,647

ROCK HILL ROAD

Fair

Over: UNNAMED STREAM

0.22 MI SW OF IS 70+MD 63, Washington, MD

Built 1920 Load: 34.5 t ADT: 778

EMPLOYEE PARKING L

Fair

Over: LEVEL 3 EXIT RAMP FROM H

BWI EMPLOYEE PARK LOT, Anne Arundel, MD

Built 1991 Load: 34.5 t ADT: 221

FLEET STREET

Fair

Over: I-895

MILE POINT 12.13, Baltimore city, MD

Built 1957 Load: 34.5 t ADT: 769

OLD CUMBERLAND RD

Fair

Over: IS 68

AT IS 68, Allegany, MD

Built 1990 Load: 34.9 t ADT: 999

US 50

Fair

Over: SEVERN RIVER

0.85 M W OF BR NO 0203900, Anne Arundel, MD

Built 1953 Load: 34.9 t ADT: 124,193

IS 695 IL

Fair

Over: MD 170 MTA LIGHT RAIL

0.48 MI N OF MD 648E, Anne Arundel, MD

Built 1967 Load: 34.9 t ADT: 74,085

IS 695 OL

Fair

Over: MD 170 MTA LIGHT RAIL

0.48 MI N OF MD 648E, Anne Arundel, MD

Built 1967 Load: 34.9 t ADT: 74,085

MD 32 WBR

Fair

Over: MD 3 NBR

0.26 MILE NORTH OF IS 97, Anne Arundel, MD

Built 1970 Load: 34.9 t ADT: 39,092

MD 166 SBR

Fair

Over: RAMP 5 FROM UMBC

0.38 MILE NORTH OF IS 195, Baltimore, MD

Built 1975 Load: 34.9 t ADT: 9,143

US 40 EB

Fair

Over: AMTRAK

0.31 MILE EAST OF MD 279, Cecil, MD

Built 1992 Load: 34.9 t ADT: 17,906

LANDER ROAD

Fair

Over: US 340

@ US 340, Frederick, MD

Built 1965 Load: 34.9 t ADT: 2,734

MD 135

Fair

Over: LITTLE YOUGHIOGHENY RIVE

0.28 MILE EAST OF MD 560, Garrett, MD

Built 1932 Load: 34.9 t ADT: 6,712

ROGERS AVE

Fair

Over: IS 70

0.18 MI E OF MD 985A, Howard, MD

Built 1966 Load: 34.9 t ADT: 14,721

US 301 NB

Fair

Over: SASSAFRAS RIVER

ON CECIL COUNTY LINE, Kent, MD

Built 1955 Load: 34.9 t ADT: 9,710

MD 182

Fair

Over: BATCHELLORS RUN

0.391 MILE SOUTH OF MD 28, Montgomery, MD

Built 1931 Load: 34.9 t ADT: 9,850

IS 495

Fair

Over: NORTHWEST BRANCH

1.00 MILE WEST OF MD 650, Montgomery, MD

Built 1967 Load: 34.9 t ADT: 222,147

IS 95X NB

Fair

Over: IS 495 OL

0.13 M S OF BR NO 1617600, Prince George's, MD

Built 1967 Load: 34.9 t ADT: 3,760

IS 95/495

Fair

Over: MD 450

1.05 MILES N OF IS 595, Prince George's, MD

Built 1963 Load: 34.9 t ADT: 204,147

US 522

Fair

Over: MD 144/WEST MAIN STREET

0.03 MILE SOUTH OF MD 894, Washington, MD

Built 1937 Load: 34.9 t ADT: 11,723

MD 67

Fair

Over: ABANDONED RR ISRAEL CRE

0.08 MILE SOUTH OF MD 67D, Washington, MD

Built 1969 Load: 34.9 t ADT: 5,202

Showing 1,001-1,050 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.