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 5

Fair

Over: ST MARYS RIVER

0.10 MILE NORTH OF MD 246, St. Mary's, MD

Built 1955 Load: 33.6 t ADT: 22,642

IS 81

Fair

Over: BR OF CONOCOCHEAGUE CREE

0.09 MILE NORTH OF US 11, Washington, MD

Built 1965 Load: 33.6 t ADT: 61,350

ERNSTSVILLE RD

Fair

Over: IS 70

1.74 MI E OF US 40, Washington, MD

Built 1964 Load: 33.6 t ADT: 200

CEDAR RIDGE ROAD

Fair

Over: IS 70 EB

0.51 MI S OF US 40, Washington, MD

Built 1967 Load: 33.6 t ADT: 1,344

BOWER AVENUE

Fair

Over: IS 70

0.68 MI S OF US 11, Washington, MD

Built 1968 Load: 33.6 t ADT: 2,314

CEDAR RIDGE ROAD

Fair

Over: IS 70 WB

2.74 MI W OF MD 63, Washington, MD

Built 1967 Load: 33.6 t ADT: 1,344

MD 144WB

Fair

Over: IS 68

3.58 MILE WEST OF US 522, Washington, MD

Built 1987 Load: 33.6 t ADT: 972

MD 346

Fair

Over: BURNT MILL BRANCH

0.73 MI W OF WORCESTER CO, Wicomico, MD

Built 1919 Load: 33.6 t ADT: 2,382

MALVERN AVENUE

Fair

Over: TOWSON RUN

0.1 MI W CHARLES ST, Baltimore, MD

Built 1910 Load: 33.6 t ADT: 2,373

KEITH AVENUE VIADU

Fair

Over: CONSOL ENERGY RAIL YARD

KEITH AVE OVER CONSOL, Baltimore city, MD

Built 1981 Load: 33.6 t ADT: 46,104

BREWSTER BRIDGE RO

Fair

Over: BIG ELK CREEK

0.71 MI E OF ELK MILLS RD, Cecil, MD

Built 1972 Load: 33.6 t ADT: 1,763

FRIZZELLBURG ROAD

Fair

Over: MEADOW BRANCH

1.07 MILES S OF MD 832, Carroll, MD

Built 1966 Load: 33.6 t ADT: 679

LIMESTONE LANE

Fair

Over: BR OF HOLLOW CREEK

AT BEECHTREE LANE INTERSC, Frederick, MD

Built 1960 Load: 33.6 t ADT: 50

CRANESVILLE ROAD

Fair

Over: MUDDY CREEK

1.2 M N INT MAPPLE GLADE, Garrett, MD

Built 1953 Load: 33.6 t ADT: 372

DURST ROAD

Fair

Over: NORTH BRANCH OF THE CASS

0.5 MI SE INT AMISH ROAD, Garrett, MD

Built 1999 Load: 33.6 t ADT: 139

BETHESDA CHURCH RO

Fair

Over: BENNETT CREEK

2.6 MILES SE OF MD 75, Montgomery, MD

Built 1990 Load: 33.6 t ADT: 4,242

MAPLE AVENUE

Fair

Over: SLIGO CREEK

0.5 MI N OF JCT SR 410, Montgomery, MD

Built 1930 Load: 33.6 t ADT: 6,024

GOOD LUCK ROAD

Fair

Over: BALD HILL BRANCH

0.09 MI E CIPRIANO RD, Prince George's, MD

Built 1963 Load: 33.6 t ADT: 13,471

SELLMAN ROAD

Fair

Over: LITTLE PAINT BRANCH

.5 MI W OF US RTE 1, Prince George's, MD

Built 1985 Load: 33.6 t ADT: 7,293

CHERRY LANE (EAST)

Fair

Over: CSX RAILROAD

0.66 MI W OF MD 197, Prince George's, MD

Built 1990 Load: 33.6 t ADT: 10,861

CHERRY LANE (WEST)

Fair

Over: CSX RAILROAD

0.66 MILES WEST OF MD 197, Prince George's, MD

Built 1979 Load: 33.6 t ADT: 10,860

CAMDEN AVENUE

Fair

Over: TONY TANK LAKE

0.2 MI S OF KAY AVE, Wicomico, MD

Built 1955 Load: 33.6 t ADT: 8,796

I-695 IL

Fair

Over: MD 10 Ramp B

0.60 MI. WEST OF MD 710, Anne Arundel, MD

Built 1972 Load: 33.6 t ADT: 20,547

IS 95 SB

Fair

Over: B&O RR

Milepost M52.0, Baltimore city, MD

Built 1978 Load: 33.6 t ADT: 94,226

IS 95 SB

Fair

Over: RUSSELL ST - MD 295

IS 95 AT RUSSELL ST, Baltimore city, MD

Built 1977 Load: 33.6 t ADT: 106,447

IS 95 RAMP C

Fair

Over: RUSSELL ST MONROE ST

Milepost M53.9, Baltimore city, MD

Built 1977 Load: 33.6 t ADT: 11,737

IS 95 RAMP J

Fair

Over: HANOVER ST RACE ST CSX

Milepost M55.2, Baltimore city, MD

Built 1979 Load: 33.6 t ADT: 10,013

IS 95 RAMP A

Fair

Over: QUAD AVE HERRING RUN

SB ON RAMP FROM MORAVIA, Baltimore city, MD

Built 1974 Load: 33.6 t ADT: 6,464

IS 95 NB VIADUCT

Fair

Over: ROADS RRS HERRING RUN

MILEPOST 59.6, Baltimore city, MD

Built 1974 Load: 33.6 t ADT: 70,879

WINCH ROAD

Fair

Over: I-95

Milepost M95.2, Cecil, MD

Built 1964 Load: 33.6 t ADT: 242

KENSINGTON PARKWAY

Fair

Over: ROCK CREEK

0.2 MI S OF BEACH DRIVE, Montgomery, MD

Built 1910 Load: 33.7 t ADT: 3,633

IS 68

Fair

Over: WILLS CREEK CSX RR MUN

3 MI. SW. OF US 220, Allegany, MD

Built 1968 Load: 34.0 t ADT: 53,950

MD 3 BU

Fair

Over: SAWMILL CREEK

0.06 MILE NORTH OF MD 270, Anne Arundel, MD

Built 1980 Load: 34.0 t ADT: 17,610

MD 695 IL

Fair

Over: MD 695 RMP 1(MERRITT BL)

0.26 MILE SOUTH OF MD 151, Baltimore, MD

Built 1966 Load: 34.0 t ADT: 41,012

SELFORD ROAD

Fair

Over: IS 95

0.13 MI N OF IS 195, Baltimore, MD

Built 1970 Load: 34.0 t ADT: 4,011

MD 404

Fair

Over: CHOPTANK RIVER

0.29 MILE EAST OF MD 328, Caroline, MD

Built 1983 Load: 34.0 t ADT: 20,471

MD 852

Fair

Over: LITTLE PIPE CREEK

0.04 M W OF ADAMS MILL RD, Carroll, MD

Built 1900 Load: 34.0 t ADT: 400

MD 7D

Fair

Over: BIG ELK CREEK

0.12 MILE EAST OF MD 281, Cecil, MD

Built 1932 Load: 34.0 t ADT: 7,988

MD 85

Fair

Over: ROCKY FOUNTAIN RUN

0.03 MILE NORTH OF MD 880, Frederick, MD

Built 1929 Load: 34.0 t ADT: 6,713

IS 270

Fair

Over: CSX TRANSPORTATION

1.0 MILE SOUTH OF MD 85, Frederick, MD

Built 1950 Load: 34.0 t ADT: 80,340

MD 28

Fair

Over: LITTLE MONOCACY RIVER

1.86 MILES E OF FRED CO, Montgomery, MD

Built 1925 Load: 34.0 t ADT: 5,050

MD 355 NB

Fair

Over: IS 495 OL

0.07 MILE NORTH OF IS 495, Montgomery, MD

Built 1958 Load: 34.0 t ADT: 55,020

MD 4 WB

Fair

Over: RACE TRACK RD

0.37 MILE SOUTH OF MD 717, Prince George's, MD

Built 1960 Load: 34.0 t ADT: 46,652

MD 950A

Fair

Over: IS 595 RAMPS H D & C

0.07 M N OF EBENEZER LANE, Prince George's, MD

Built 1993 Load: 34.0 t ADT: 9,110

MD 300

Fair

Over: RED LION BRANCH

0.09 MILE WEST OF MD 290, Queen Anne's, MD

Built 1920 Load: 34.0 t ADT: 2,391

US 13 NB

Fair

Over: MANOKIN RIVER

0.05 MILE NORTH OF MD 363, Somerset, MD

Built 1958 Load: 34.0 t ADT: 22,370

BEDFORD STREET / F

Fair

Over: US 40 ALT CSX QUEEN CI

FREDERICK ST @ US 40ALT, Allegany, MD

Built 1977 Load: 34.0 t ADT: 11,771

MANTUA MILL ROAD

Fair

Over: WESTERN RUN

0.07 MI E OF MD 128, Baltimore, MD

Built 1986 Load: 34.0 t ADT: 450

OREMS ROAD

Fair

Over: MIDDLE RIVER

0.3 MI S. OF MARTIN BLVD., Baltimore, MD

Built 1980 Load: 34.0 t ADT: 5,165

DANVILLE ROAD DAL

Fair

Over: TRIBUTARY TO REDHOUSE CR

1.0MI SW US1 AND I-695, Baltimore, MD

Built 1948 Load: 34.0 t ADT: 12,981

Showing 951-1,000 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.