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

LOMBARD STREET VIA

Fair

Over: NORFOLK SOUTHERN RAILROA

0.2 MI W OF I-895, Baltimore city, MD

Built 1991 Load: 35.4 t ADT: 30,700

MD 306

Fair

Over: TANYARD BRANCH

2000 FEET EAST OF MD 315, Caroline, MD

Built 1950 Load: 35.4 t ADT: 2,391

ANNANDALE ROAD

Fair

Over: TOMS CREEK

0.62 MI W OF EMMITSBURG, Frederick, MD

Built 1980 Load: 35.4 t ADT: 1,505

ARNOLDTOWN ROAD

Fair

Over: BROAD RUN

0.2 MI N PICNIC WOODS RD, Frederick, MD

Built 1982 Load: 35.4 t ADT: 339

WWTP ROAD

Fair

Over: CARROLL CREEK

1.8 MI EAST OF MD 355, Frederick, MD

Built 1936 Load: 35.4 t ADT: 3,813

W. COLLEGE TERRACE

Fair

Over: CARROLL CREEK

0.2 MI NORTH OF MD 144, Frederick, MD

Built 1933 Load: 35.4 t ADT: 4,060

CARSINS RUN ROAD

Fair

Over: CARSINS RUN

0.03 MILES N OF MD 22, Harford, MD

Built 1972 Load: 35.4 t ADT: 655

ROE ROAD

Fair

Over: RED LION BRANCH

0.4 MI NW OF MD 290, Queen Anne's, MD

Built 1992 Load: 35.4 t ADT: 110

EB MORAVIA RD TO I

Fair

Over: US40 (Pulaski Highway)

0.4 MI. E. OF IS 895, Baltimore city, MD

Built 1976 Load: 35.4 t ADT: 6,464

I-95

Fair

Over: MD 824

Milepost M93.5, Cecil, MD

Built 1964 Load: 35.4 t ADT: 80,402

MD 436

Fair

Over: IS 595 RAMPS B & C

0.1 MI N OF MD 783, Anne Arundel, MD

Built 1991 Load: 35.8 t ADT: 5,110

MD 32 WBR

Fair

Over: MD 3 SBR

0.35 MILE NORTH OF IS 97, Anne Arundel, MD

Built 1970 Load: 35.8 t ADT: 39,092

MD 7

Fair

Over: HONEYGO RUN

0.07 MI S OF EBENEZER RD, Baltimore, MD

Built 1950 Load: 35.8 t ADT: 16,450

MD 147

Fair

Over: LITTLE GUNPOWDER FALLS

ON HARFORD CO LINE, Baltimore, MD

Built 1928 Load: 35.8 t ADT: 10,192

MD 695 OL

Fair

Over: AMTRAK & BACK RIVER

0.75 MILE SOUTH OF MD 150, Baltimore, MD

Built 1968 Load: 35.8 t ADT: 49,829

IS 70

Fair

Over: WOODLAWN DRIVE

0.53 MI E OF IS 695, Baltimore, MD

Built 1968 Load: 35.8 t ADT: 25,300

MT PHILLIP ROAD

Fair

Over: IS 70

1.77 MI W OF MD 180, Frederick, MD

Built 1967 Load: 35.8 t ADT: 5,102

MD 7

Fair

Over: BYNUM RUN

0.17 MILE SOUTH OF MD 136, Harford, MD

Built 1923 Load: 35.8 t ADT: 11,350

MD 132B

Fair

Over: SWAN CREEK

0.33 MILE SOUTH OF US 40, Harford, MD

Built 1930 Load: 35.8 t ADT: 4,030

VALE ROAD

Fair

Over: US 1

@ US 1, Harford, MD

Built 1963 Load: 35.8 t ADT: 2,254

US 1

Fair

Over: DORSEY RUN

0.04 MILE S OF MD 958P, Howard, MD

Built 1929 Load: 35.8 t ADT: 21,992

IS 95 NB

Fair

Over: MD 103

0.50 MILE SOUTH OF MD 100, Howard, MD

Built 1968 Load: 35.8 t ADT: 193,331

IS 95 SB

Fair

Over: MD 103

0.50 MILE SOUTH OF MD 100, Howard, MD

Built 1968 Load: 35.8 t ADT: 193,331

MD 100 EB

Fair

Over: MD 100 RAMP A

0.92 MILE WEST OF US 1, Howard, MD

Built 1970 Load: 35.8 t ADT: 84,712

MD 100 WB

Fair

Over: MD 100 RAMP A

0.92 MILE WEST OF US 1, Howard, MD

Built 1970 Load: 35.8 t ADT: 84,712

MD 32 WBR

Fair

Over: MIDDLE PATUXENT RIVER

0.89 MILE NORTH OF US 29, Howard, MD

Built 1985 Load: 35.8 t ADT: 48,061

SHADY GROVE ROAD

Fair

Over: IS 270 & C-D ROADS

1.02 MI S OF MD 355, Montgomery, MD

Built 1987 Load: 35.8 t ADT: 40,730

MD 214

Fair

Over: WESTERN BRANCH

0.48 MILE WEST OD MD 193, Prince George's, MD

Built 1987 Load: 35.8 t ADT: 48,951

US 301 SB

Fair

Over: WESTERN BRANCH

0.12 MILE S OF MD 976C, Prince George's, MD

Built 1949 Load: 35.8 t ADT: 35,812

IS 95X NB

Fair

Over: IS 95 RAMP F(7)

0.21 M S OF BR NO 1612700, Prince George's, MD

Built 1967 Load: 35.8 t ADT: 1,880

IS 95 RAMP I

Fair

Over: IS95X NB IS495OL RAMP F

0.92 MILE NORTH OF US 1, Prince George's, MD

Built 1987 Load: 35.8 t ADT: 65,948

MD 410

Fair

Over: AMTRAK WMATA BEAVER CR

0.17 MILE EAST OF US 50, Prince George's, MD

Built 1988 Load: 35.8 t ADT: 20,822

MD 302

Fair

Over: BR OF RED LION BRANCH

0.13 MILE WEST OF MD 313, Queen Anne's, MD

Built 1974 Load: 35.8 t ADT: 3,001

MD 413

Fair

Over: BIG ANNEMESSEX RIVER

2.59 MILES S OF MD 361, Somerset, MD

Built 1949 Load: 35.8 t ADT: 5,670

US 13 NB

Fair

Over: WAGRAM CREEK

0.56 M N OF VA STATE LINE, Worcester, MD

Built 1954 Load: 35.8 t ADT: 12,933

CONWAY ROAD

Fair

Over: LITTLE PATUXENT RIVER

0.43 MI W OF MD 3, Anne Arundel, MD

Built 1966 Load: 35.8 t ADT: 9,663

BEAVER DAM ROAD

Fair

Over: OREGON BRANCH

0.3 MI S OF SHAWAN ROAD, Baltimore, MD

Built 1952 Load: 35.8 t ADT: 6,171

SULPHUR SPRING ROA

Fair

Over: EAST BRANCH HERBERT RUN

INTER SELMA & SUL SPRNG, Baltimore, MD

Built 1962 Load: 35.8 t ADT: 20,845

FITCH AVENUE

Fair

Over: TRIBUTARY TO STEMMERS RU

0.2 MI E OF BELAIR RD, Baltimore, MD

Built 1979 Load: 35.8 t ADT: 2,860

FREDERICK AVENUE

Fair

Over: AMTRAK

AT JCT WITH HILTON ST., Baltimore city, MD

Built 1925 Load: 35.8 t ADT: 2,270

WOODFIELD SCHOOL R

Fair

Over: GREAT SENECA CREEK

0.5 MILES NORTH OF MD 124, Montgomery, MD

Built 1974 Load: 35.8 t ADT: 160

RITCHIE ROAD

Fair

Over: TRIBUTARY TO SOUTHWEST

0.37 MI SOUTH OF MD 214, Prince George's, MD

Built 1980 Load: 35.8 t ADT: 21,862

LOTTSFORD VISTA RD

Fair

Over: LOTTSFORD BRANCH

2.23 MI SOUTH OF MD 704, Prince George's, MD

Built 1999 Load: 35.8 t ADT: 7,518

WILLIAM BEANES RD

Fair

Over: FEDERAL SPRING BRANCH

1.1 MI EAST OF OSBORNE RD, Prince George's, MD

Built 1964 Load: 35.8 t ADT: 763

STUART LANE

Fair

Over: TRIBUTARY TO PISCATAWAY

0.2 MI WEST OF MD 5, Prince George's, MD

Built 1993 Load: 35.8 t ADT: 1,571

I-895 NB

Fair

Over: HALETHORPE FARMS RD

Milepost M2.4, Baltimore, MD

Built 1957 Load: 35.8 t ADT: 7,507

I-895

Fair

Over: PATAPSCO AVE

Milepost M6.80, Baltimore city, MD

Built 1957 Load: 35.8 t ADT: 69,152

RIVER ROAD

Fair

Over: TRIBUTARY OF PATAPSCO RI

PATAPSCO VALLEY ST PARK, Howard, MD

Built 1997 Load: 35.8 t ADT: 100

I-895 SB

Fair

Over: I-95

0.90 MILES S OF US 1, Howard, MD

Built 1973 Load: 35.8 t ADT: 5,055

MD 639 WILLIAMS RD

Fair

Over: EVITTS CREEK

1.51 MILES SOUTH OF IS 68, Allegany, MD

Built 1966 Load: 36.3 t ADT: 2,530

Showing 1,101-1,150 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.