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

MONTEVUE LANE

Good

Over: TRIBUTARY 96

1.2 MI. W OF US 15, Frederick, MD

Built 1995 Load: 39.0 t ADT: 9,791

IS 95 RAMP Q

Good

Over: FROM INTERSTATE AVE

0.1 MI. S. OF BOSTON ST., Baltimore city, MD

Built 1980 Load: 39.0 t ADT: 7,352

I-895 TOLL LANES

Good

Over: I-95 SOUTHBOUND MOORES

ETLs at I-895 and I-95, Baltimore city, MD

Built 2011 Load: 39.0 t ADT: 72,287

OLD ELK NECK ROAD

Good

Over: PINEY CREEK

0.65 MI N of Turkey Point, Cecil, MD

Built 2015 Load: 39.2 t ADT: 1,710

GREEN ROAD

Good

Over: TRIB / DEER CREEK

0.2 M W OF LONG CORNER RD, Harford, MD

Built 2019 Load: 39.2 t ADT: 510

FORESTVILLE RD

Good

Over: IS 95

2.37 MI N OF MD 5, Prince George's, MD

Built 1963 Load: 39.5 t ADT: 11,800

BARTLETT RUN ROAD

Good

Over: BUTCHERS RUN

0.16 MI W OF MD 36, Allegany, MD

Built 2007 Load: 39.5 t ADT: 970

GLEN ARM ROAD

Good

Over: GUNPOWDER FALLS

0.02 MI E OF MD 567, Baltimore, MD

Built 1998 Load: 39.5 t ADT: 14,402

SOUTHERN CONNECTOR

Good

Over: TRIBUTARY TO ST. JOHN CR

0.5 MI WEST OF MD 760, Calvert, MD

Built 2008 Load: 39.5 t ADT: 7,626

SENNETT ROAD

Good

Over: HERRING RUN

0.22 MI NE OF MD 404, Caroline, MD

Built 1993 Load: 39.5 t ADT: 545

BOLIVAR COURT

Good

Over: BOLIVAR BRANCH

AT BOLIVAR RD INTERSECTN, Frederick, MD

Built 1994 Load: 39.5 t ADT: 35

WINTERS RUN ROAD

Good

Over: MOUNTAIN BRANCH

0.05 MILES S OF SINGER RD, Harford, MD

Built 1972 Load: 39.5 t ADT: 585

I695W RAMP TO I95S

Good

Over: I95/I695 (INTERCHANGE)

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

Built 2008 Load: 39.5 t ADT: 10,671

IS 895

Good

Over: CITY STREETS B&O PA RR

Milepost 10.62, Baltimore city, MD

Built 2020 Load: 39.5 t ADT: 82,953

MD 200 (ICC) EB

Good

Over: TRIBUTARY OF NBRC

1.34 MI W OF MD 97, Montgomery, MD

Built 2010 Load: 39.5 t ADT: 31,652

MD 200 (ICC) WB

Good

Over: Paint Branch

1.40 Mi East of MD650, Montgomery, MD

Built 2010 Load: 39.5 t ADT: 32,064

MD 200 (ICC) WB

Good

Over: US 29 & Ramp SE NB&EB

0.5 Mi S of Briggs Chaney, Montgomery, MD

Built 2011 Load: 39.5 t ADT: 21,574

IS 83 SBR

Good

Over: NCR TRAIL & LITTLE FALLS

0.55 MILE SOUTH OF MD 45, Baltimore, MD

Built 2005 Load: 39.9 t ADT: 50,431

MD 119

Good

Over: GUNNERS BR CSXT RR

.5 MI S OF MIDDLEBROOK RD, Montgomery, MD

Built 1987 Load: 39.9 t ADT: 7,535

IS 81 RAMP 8

Good

Over: BR OF CONOCOCHEAGUE CREE

0.10 MI N OF US 11, Washington, MD

Built 1965 Load: 39.9 t ADT: 3,561

DRAPERS MILL ROAD

Good

Over: GRAVELLY BRANCH

0.6 MILES EAST OF MD 313, Caroline, MD

Built 2003 Load: 39.9 t ADT: 1,465

STEWART NECK ROAD

Good

Over: KINGS CREEK

2.3 MI S OF PRINCESS ANNE, Somerset, MD

Built 2014 Load: 39.9 t ADT: 661

CALVARY ROAD

Good

Over: JENKINS CREEK

0.6 MI S OF CRISFIELD RD, Somerset, MD

Built 2008 Load: 39.9 t ADT: 307

I-695 OL

Good

Over: DOCK ROAD

0.2 MI S OF FSK BR W ABUT, Baltimore city, MD

Built 1972 Load: 39.9 t ADT: 19,157

New Hampshire Ave

Good

Over: MD 200 (ICC)

5.03 Mi East of MD97, Montgomery, MD

Built 2010 Load: 39.9 t ADT: 31,575

MD 404

Good

Over: BRANCH OF TUCKAHOE CREEK

0.6 M E OF MD 312, Caroline, MD

Built 2017 Load: 40.2 t ADT: 19,600

FIRETOWER ROAD

Good

Over: BASIN RUN

0.19 MI S OF WAYNE ST, Cecil, MD

Built 2012 Load: 40.2 t ADT: 1,219

MONOCACY BOULEVARD

Good

Over: MONOCACY RIVER

0.1 MI SOUTH OF GAS HOUSE, Frederick, MD

Built 2019 Load: 40.2 t ADT: 5,912

MD 36

Good

Over: GEORGES CREEK

1.70 MI N OF MD 935, Allegany, MD

Built 2010 Load: 40.4 t ADT: 7,706

IS 595 RAMP 3

Good

Over: IS 595

1.77 MI W OF MD 450, Anne Arundel, MD

Built 1994 Load: 40.4 t ADT: 101,670

MD 32AA

Good

Over: MD 32

0.41 MI S OF MD 175, Anne Arundel, MD

Built 1991 Load: 40.4 t ADT: 10,271

MD 695 OL

Good

Over: AMTRAK

1.12 MILE NORTH OF MD 702, Baltimore, MD

Built 1972 Load: 40.4 t ADT: 74,892

MD 152

Good

Over: AMTRAK

2.20 MILES SOUTH OF US 40, Harford, MD

Built 1994 Load: 40.4 t ADT: 102

MD 303

Good

Over: BR OF TUCKAHOE CREEK

0.12 M S OF MILL RIDGE RD, Talbot, MD

Built 2008 Load: 40.4 t ADT: 800

OLD MIDDLETOWN RD

Good

Over: CONE BRANCH

0.25 MI SOUTH OF MD 17, Frederick, MD

Built 1974 Load: 40.4 t ADT: 966

KELBAUGH ROAD

Good

Over: OWENS CREEK

AT FRANKLINVILLE RD INT, Frederick, MD

Built 2001 Load: 40.4 t ADT: 533

WHISKEY BOTTOM RD

Good

Over: CSX RR TRACKS

ANNE ARUNDEL COUNTY LINE, Howard, MD

Built 1943 Load: 40.4 t ADT: 10,475

MD 200 (ICC) WB

Good

Over: Shady Grove Road

4.86 MI W. OF MD 97, Montgomery, MD

Built 2010 Load: 40.4 t ADT: 30,827

MD 273

Good

Over: BIG ELK CREEK

2.14 MI W OF DELAWARE, Cecil, MD

Built 2020 Load: 40.5 t ADT: 8,500

MD 224

Good

Over: BR OF POTOMAC RIVER

1.62 MI S. OF MD 344, Charles, MD

Built 2019 Load: 40.5 t ADT: 325

MD 193

Good

Over: IS 495

0.59 MILE EAST OF US 29, Montgomery, MD

Built 1958 Load: 40.5 t ADT: 44,000

IS 270 RAMP

Good

Over: UNNAMED TRIB TO SENECA C

1.0 Mile North of MD 124, Montgomery, MD

Built 2020 Load: 40.5 t

VERNON ROAD

Good

Over: SECOND MINE BRANCH

0.5 M NW WHITE HALL ROAD, Baltimore, MD

Built 2012 Load: 40.5 t ADT: 268

OWINGS MILLS BOULE

Good

Over: SCOTTS LEVEL BRANCH

2.5 MI. S. OF IS 795, Baltimore, MD

Built 2015 Load: 40.5 t ADT: 7,431

TROYER ROAD

Good

Over: TRIB / LITTLE DEER CREEK

1.5 MILES NE OF MD 23, Harford, MD

Built 2023 Load: 40.5 t ADT: 335

MD 313

Good

Over: MASONS BRANCH

ON QUEEN ANNES CO LINE, Caroline, MD

Built 2007 Load: 40.8 t ADT: 2,530

MD 30

Good

Over: TRIB TO EAST BRANCH

1.21 M N OF MD 482, Carroll, MD

Built 2007 Load: 40.8 t ADT: 9,450

MD 543

Good

Over: US 40 CSX RAILROAD

1.17 MILES SOUTH OF MD 7, Harford, MD

Built 1995 Load: 40.8 t ADT: 17,981

HOPKINS/GORMAN RD

Good

Over: US 29

OVER US 29, Howard, MD

Built 2001 Load: 40.8 t ADT: 7,207

MD 216 RAMP A (8)

Good

Over: MD 216

.78 MI S OF I-95, Howard, MD

Built 2003 Load: 40.8 t ADT: 3,691

Showing 3,901-3,950 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.