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 932B-BURNTWOODS

Good

Over: MD 32

0.051 M S OF TEN OAKS RD, Howard, MD

Built 2008 Load: 40.8 t ADT: 2,405

MD 118

Good

Over: IS 270

0.33 M N OF AIRCRAFR DR, Montgomery, MD

Built 1954 Load: 40.8 t ADT: 28,651

MD 28

Good

Over: BUCKHORN RUN

AT INTERSECTION OF MD 182, Montgomery, MD

Built 2001 Load: 40.8 t ADT: 21,671

MD 382

Good

Over: FULL MILL BRANCH

0.42 M S/WHITES LNDNG RD, Prince George's, MD

Built 1999 Load: 40.8 t ADT: 4,500

IS 70 EB

Good

Over: MD 65

1.35 MILES EAST OF MD 632, Washington, MD

Built 2023 Load: 40.8 t ADT: 60,800

MD 354

Good

Over: ADKINS MILL POND

0.20 MI N OF MD 350, Wicomico, MD

Built 2002 Load: 40.8 t ADT: 1,842

CARRIG COURT

Good

Over: MAGOTHY BRANCH

1.5 MI W OF MD 2, Anne Arundel, MD

Built 2019 Load: 40.8 t ADT: 345

RUTLAND ROAD

Good

Over: NORTH RIVER

200 FT. FROM MD 450, Anne Arundel, MD

Built 2018 Load: 40.8 t ADT: 2,860

RACE ROAD

Good

Over: PINEY RUN

0.5 MI S OF HANOVER ROAD, Anne Arundel, MD

Built 2002 Load: 40.8 t ADT: 485

THORNTON MILL ROAD

Good

Over: TRIBUTARY TO WESTERN RUN

0.4 MI S OF QUAKER BOTTOM, Baltimore, MD

Built 2010 Load: 40.8 t ADT: 300

PINEY HILL ROAD

Good

Over: TRIBUTARY TO GUNPOWDER F

0.4 MI S OF MONKTON ROAD, Baltimore, MD

Built 2003 Load: 40.8 t ADT: 244

COLORA ROAD

Good

Over: BASIN RUN

0.52 MI N OF RUSSELL RD, Cecil, MD

Built 2001 Load: 40.8 t ADT: 383

THEODORE ROAD

Good

Over: STONY RUN

0.55 MI W OF MD 274, Cecil, MD

Built 2006 Load: 40.8 t ADT: 2,510

LIBERTY GROVE ROAD

Good

Over: BASIN RUN

0.5 MI N OF DR. JACK RD., Cecil, MD

Built 1929 Load: 40.8 t ADT: 910

MURKLE ROAD

Good

Over: BIG PIPE CREEK

0.41 MILES SOUTH OF MD 97, Carroll, MD

Built 2005 Load: 40.8 t ADT: 377

HEAPS ROAD

Good

Over: JANE CARRS RUN

0.7 MILES SW OF MD 136, Harford, MD

Built 1996 Load: 40.8 t ADT: 303

SPRING ROAD

Good

Over: STREAM

100 FT N. OF 54TH PLACE, Prince George's, MD

Built 1958 Load: 40.8 t ADT: 271

LANDIS ROAD

Good

Over: TRIB. OF LANDIS SPRING

JCT. LONDONTOWNE DR, Washington, MD

Built 2001 Load: 40.8 t ADT: 423

I-95 NORTHBOUND

Good

Over: I-695 STEMMERS RUN

I695 IS95 Interchange, Baltimore, MD

Built 2008 Load: 40.8 t ADT: 52,628

MD 43 EB

Good

Over: I-95

I-95 Mile Marker 66.8, Baltimore, MD

Built 2014 Load: 40.8 t ADT: 6,068

I-895 NB

Good

Over: HERRING RUN

Milepost M13.72, Baltimore city, MD

Built 1957 Load: 40.8 t ADT: 35,344

LAPIDUM ROAD

Good

Over: I-95

Milepost M89.7, Harford, MD

Built 1963 Load: 40.8 t ADT: 515

RIVER ROAD

Good

Over: C&O CANAL

0.1 miles from North Bran, Allegany, MD

Built 2015 Load: 40.8 t ADT: 100

MD 47

Good

Over: NORTH BRANCH

0.23 MI N OF MD 36, Allegany, MD

Built 2016 Load: 41.1 t ADT: 2,300

MARSHANE ROAD

Good

Over: TRIBUTARY TO NORRIS RUN

0.35 MI E OF NICODEMUS RD, Baltimore, MD

Built 2015 Load: 41.1 t ADT: 200

CHURCH ROAD

Good

Over: BLACK BRANCH

1.3 MI. S. OF MD 214, Prince George's, MD

Built 2022 Load: 41.1 t ADT: 10,100

GAMBRILLS ROAD

Good

Over: MD 32

1.22 MI S OF MD 3, Anne Arundel, MD

Built 1992 Load: 41.3 t ADT: 3,941

US 1

Good

Over: MD 43

0.85 MILE EAST OF IS 695, Baltimore, MD

Built 1993 Load: 41.3 t ADT: 35,092

MD 231

Good

Over: GILBERT CREEK

1.06 MILES WEST OF MD 5, Charles, MD

Built 1930 Load: 41.3 t ADT: 2,592

MD 390

Good

Over: CSX TRANSPORTATION

0.45 MI N OF MD 410, Montgomery, MD

Built 1958 Load: 41.3 t ADT: 35,062

SHADY GROVE ROAD

Good

Over: IS 370

2.43 MI. E. OF I-270, Montgomery, MD

Built 1989 Load: 41.3 t ADT: 53,010

IS 95/495 EXP

Good

Over: IS 95/IS 495 RAMP Q

0.89 MILE WEST OF MD 210, Prince George's, MD

Built 2008 Load: 41.3 t ADT: 146,744

MILFORD MILL ROAD

Good

Over: MTA CSX RAILROAD

0.4 MI W OF MD RTE 140, Baltimore, MD

Built 1984 Load: 41.3 t ADT: 17,445

COLDSPRING LANE

Good

Over: MTA AND JONES FALLS

1.5 MI S NORTHERN PKWY, Baltimore city, MD

Built 1990 Load: 41.3 t ADT: 12,100

LENHART ROAD

Good

Over: FISHING CREEK

0.25 M E OLD FREDERICK RD, Frederick, MD

Built 1982 Load: 41.3 t ADT: 56

WHITES FERRY ROAD

Good

Over: BROAD RUN TRIBUTARY

0.3 MI E OF WASCHE ROAD, Montgomery, MD

Built 2014 Load: 41.3 t ADT: 1,907

NASSAWANGO ROAD

Good

Over: NASSAWANGO CREEK

2.05 MI SW OF MD 12, Worcester, MD

Built 1998 Load: 41.3 t ADT: 900

I95S TO I695E

Good

Over: I95/I695 INTERCHANGE

I-95/I-695 Interchange, Baltimore, MD

Built 2008 Load: 41.3 t ADT: 14,826

MD 200 (ICC) EB

Good

Over: Gum Springs & Paint Bran

1.40 Mi East of MD650, Montgomery, MD

Built 2010 Load: 41.3 t ADT: 31,755

Watkins Mill Road

Good

Over: IS 270 (Wash. Natl Pike

0.75 MI. N of MD 124, Montgomery, MD

Built 2020 Load: 41.5 t

MD 97

Good

Over: Reddy Branch

2 MI. NORTH OF OLNEY, Montgomery, MD

Built 2022 Load: 41.5 t ADT: 10,400

GORE MILL ROAD

Good

Over: LITTLE FALLS

1.2 MI N MIDDLETOWN RD, Baltimore, MD

Built 2018 Load: 41.5 t ADT: 172

GAS HOUSE PIKE

Good

Over: LINGANORE CREEK

1.0 MI W OF CNTRL CHURCH, Frederick, MD

Built 2021 Load: 41.5 t ADT: 11,825

PINEY MEETINGHOUSE

Good

Over: WATTS BRANCH

0.8 MILES NORTH OF MD 190, Montgomery, MD

Built 2017 Load: 41.5 t ADT: 6,724

MD 61 (CANAL PKWY)

Good

Over: C & O CANAL

0.13 MILE N OF W VA LINE, Allegany, MD

Built 1997 Load: 41.7 t ADT: 11,501

MD 295 NBR

Good

Over: MD 100

2.7 MI SE OF IS 95, Anne Arundel, MD

Built 1992 Load: 41.7 t ADT: 88,882

MD 45

Good

Over: BEAVERDAM RUN

0.11 M N OF RAILROAD AVE, Baltimore, MD

Built 1990 Load: 41.7 t ADT: 30,482

MD 129

Good

Over: IS 695

0.05 MI N OF MD 129A, Baltimore, MD

Built 1961 Load: 41.7 t ADT: 20,000

MD 695 RAMP 7A

Good

Over: NORTHEAST CREEK

@ MD 695 & MD 702, Baltimore, MD

Built 1972 Load: 41.7 t ADT: 7,951

MD 509

Good

Over: GOVERNOR RUN

0.79 MI E OF MD 765, Calvert, MD

Built 2002 Load: 41.7 t ADT: 791

Showing 3,951-4,000 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.