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

IS 97 RAMP A

Fair

Over: IS 97

0.52 M S OF BR NO 0214900, Anne Arundel, MD

Built 1987 Load: 61.2 t ADT: 21,500

MD 295

Fair

Over: DAISY AVENUE

0.32 MI S OF BALT CITY, Baltimore, MD

Built 1949 Load: 61.2 t ADT: 66,611

IS 795 NBR

Fair

Over: MT WILSON LANE

0.62 MILE SOUTH OF MD 37, Baltimore, MD

Built 1983 Load: 61.2 t ADT: 110,982

IS 795 SBR

Fair

Over: MT WILSON LANE

0.62 MILE SOUTH OF MD 37, Baltimore, MD

Built 1983 Load: 61.2 t ADT: 110,982

MD 17

Fair

Over: MIDDLE CREEK

1.64 MILES N0RTH OF US 40, Frederick, MD

Built 1889 Load: 61.2 t ADT: 1,951

MD 100 EB

Fair

Over: IS 95

0.79 MILE WEST OF US 1, Howard, MD

Built 1970 Load: 61.2 t ADT: 90,902

GUNPOWDER ROAD

Fair

Over: GUNPOWDER FALLS

2.3 MI. S. MD-PA ST LINE, Baltimore, MD

Built 1968 Load: 61.2 t ADT: 163

PIGS EAR ROAD

Fair

Over: MILL RUN

.25 MILES SOUTH OF US40, Garrett, MD

Built 2000 Load: 61.2 t ADT: 205

SHARON ROAD

Fair

Over: SOUTH STIRRUP RUN

0.7 MILES E OF MD 24, Harford, MD

Built 1950 Load: 61.2 t ADT: 1,140

LONG CORNER ROAD

Fair

Over: PATUXENT RIVER

1 MILE NORTH OF GUE ROAD, Montgomery, MD

Built 1968 Load: 61.2 t ADT: 2,595

WOOTTON PARKWAY

Fair

Over: CABIN JOHN CREEK

1.1 MILES WEST MD 355, Montgomery, MD

Built 1991 Load: 61.2 t ADT: 20,825

MCKENDREE ROAD

Fair

Over: TIMOTHY BRANCH

.26 MI W OF US 301 / MD 5, Prince George's, MD

Built 1986 Load: 61.2 t ADT: 5,202

CROUSE MILL RD

Fair

Over: TUCKAHOE CREEK

1 MI SE. OF MD 481, Queen Anne's, MD

Built 1999 Load: 61.2 t ADT: 300

MD 832

Fair

Over: BEAR BRANCH

1.46 MILE SOUTH OF MD 84, Carroll, MD

Built 1932 Load: 61.7 t ADT: 1,662

MD 165

Fair

Over: DEER CREEK

1.89 MILES SOUTH OF MD 24, Harford, MD

Built 1932 Load: 61.7 t ADT: 6,101

OLD CRAIN HWY

Fair

Over: MD 4

OLD CRAIN HWY @ MD 4, Prince George's, MD

Built 1988 Load: 61.7 t ADT: 6,871

IS 95

Fair

Over: LITTLE PAINT BRANCH

0.43 MILE WEST OF US I, Prince George's, MD

Built 1963 Load: 61.7 t ADT: 226,340

US 50

Fair

Over: GODDARD ARMSTRONG PKWY

0.837 MILE WEST OF US 13, Wicomico, MD

Built 2001 Load: 61.7 t ADT: 18,971

MAYO BEACH PARK RD

Fair

Over: TIDAL GUT TO BIG POND

.4 MI S OF SHOREHAM BEACH, Anne Arundel, MD

Built 1998 Load: 61.7 t ADT: 69

WINDSOR MILL ROAD

Fair

Over: GWYNNS FALLS

0.3 MI WEST CLIFTON AVE, Baltimore city, MD

Built 1887 Load: 61.7 t ADT: 20,504

EDMONDSON AVENUE

Fair

Over: AMTRAK

0.25 MI W OF MONROE ST, Baltimore city, MD

Built 1925 Load: 61.7 t ADT: 12,887

WILKENS AVE

Fair

Over: CSX RAILROAD

0.1 MI W OF BRUNSWICK ST, Baltimore city, MD

Built 1991 Load: 61.7 t ADT: 9,834

SUGARLOAF MTN RD

Fair

Over: BR OF BENNETT CREEK

0.12 MI S OF THURSTON RD, Frederick, MD

Built 1981 Load: 61.7 t ADT: 133

BOWIE MILL ROAD

Fair

Over: ROCK CREEK NORTH BRANCH

1.8 MI NE OF MD 115, Montgomery, MD

Built 1959 Load: 61.7 t ADT: 10,400

EAST RANDOLPH ROAD

Fair

Over: PAINT BRANCH

0.5 MI W OLD COLUMBIA PK, Montgomery, MD

Built 1963 Load: 61.7 t ADT: 34,092

LEELAND ROAD

Fair

Over: COLLINGTON BRANCH

1.34 MILES NW OF US 301, Prince George's, MD

Built 1985 Load: 61.7 t ADT: 5,468

DAM NO. 5 ROAD

Fair

Over: LITTLE CONOCOCHEAGUE CRE

2.23 MI SW OF MD RTE 56, Washington, MD

Built 1993 Load: 61.7 t ADT: 430

IS 68 WB

Fair

Over: MD 948AO FLINTSTONE CRK

0.24 M E OF BR NO 0116200, Allegany, MD

Built 1990 Load: 62.1 t ADT: 18,551

MD 100 EBR

Fair

Over: IS 97 RAMP 1 A

I-97 MD 100 INTERCHANGE, Anne Arundel, MD

Built 1996 Load: 62.1 t ADT: 75,406

MD 136

Fair

Over: BROAD CREEK

1.35 MILES S OF MD 646, Harford, MD

Built 1961 Load: 62.1 t ADT: 7,511

IS 95 OL

Fair

Over: SOUTHWEST BRANCH

0.25 MILE SOUTH OF MD 214, Prince George's, MD

Built 1964 Load: 62.1 t ADT: 102,413

IS 95 RAMP F(1)

Fair

Over: MD 414 (OXON HILL ROAD)

0.18 M N OF BR NO 1622100, Prince George's, MD

Built 1990 Load: 62.1 t ADT: 14,985

US 13 NB

Fair

Over: NORFOLK SOUTHERN RR

0.40 MILE NORTH OF MD 364, Somerset, MD

Built 1957 Load: 62.1 t ADT: 16,470

MD 460

Fair

Over: LITTLE ANNEMESSEX RIVER

0.52 MILE WEST OF MD 413, Somerset, MD

Built 1966 Load: 62.1 t ADT: 4,071

SMITH AVENUE

Fair

Over: JONES FALLS

INTER. WITH FALLS ROAD, Baltimore city, MD

Built 1963 Load: 62.1 t ADT: 7,284

ATHOL AVENUE

Fair

Over: UNNAMED STREAM

0.3 MI E OF LOUDON AVE, Howard, MD

Built 1945 Load: 62.1 t ADT: 680

TACKBROOKE DRIVE

Fair

Over: ROCK CREEK NORTH BRANCH

N OF BOWIE MILL ROAD, Montgomery, MD

Built 2002 Load: 62.1 t ADT: 67

MUIRKIRK ROAD

Fair

Over: MUIRKIRK BR OF INDIAN CR

0.04 MI W OF US 1, Prince George's, MD

Built 1969 Load: 62.1 t ADT: 22,647

YELLOWWOOD LANE

Fair

Over: BALD HILL BRANCH

0.2 M W OF LOTTSFORD RD, Prince George's, MD

Built 2000 Load: 62.1 t ADT: 4,503

MONEY MAKE ROAD

Fair

Over: BOLINGBROKE CREEK

2 MI SE OF TRAPPE, Talbot, MD

Built 2006 Load: 62.1 t ADT: 164

MD 36

Fair

Over: BRADDOCK RUN

0.03 MI S OF US 40L, Allegany, MD

Built 1957 Load: 62.6 t ADT: 10,713

IS 695

Fair

Over: IS 83 SBR & JONES FALLS

0.17 MILE SOUTH OF IS 83, Baltimore, MD

Built 1961 Load: 62.6 t ADT: 192,739

IS 195 NBR

Fair

Over: FRANCIS AVENUE

0.35 MILE SOUTH OF IS 95, Baltimore, MD

Built 1969 Load: 62.6 t ADT: 41,831

MD 404 BUSINESS

Fair

Over: CHOPTANK RIVER

0.12 M W OFMARKET ST, Caroline, MD

Built 1980 Load: 62.6 t ADT: 2,970

MD 404 EB

Fair

Over: MD 313

0.99 MILE EAST OF MD 328, Caroline, MD

Built 1987 Load: 62.6 t ADT: 15,421

MD 404 WB

Fair

Over: MD 313

0.99 MILE EAST OF MD 328, Caroline, MD

Built 1987 Load: 62.6 t ADT: 15,421

US 15 SBR

Fair

Over: MD 77 HUNTING CREEK

0.46 MILE SOUTH OF MD 15D, Frederick, MD

Built 1985 Load: 62.6 t ADT: 30,410

US 50 WBR

Fair

Over: MD 295

0.17 MILE WEST OF MD 201, Prince George's, MD

Built 1957 Load: 62.6 t ADT: 41,856

SEVERN AVENUE

Fair

Over: AMTRAK RAILROAD

0.06 MI E OF IS 695, Baltimore, MD

Built 1979 Load: 62.6 t ADT: 1,575

OWINGS MILLS BOULE

Fair

Over: GWYNNS FALLS

1 MI N OF REISTERSTOWN RD, Baltimore, MD

Built 1989 Load: 62.6 t ADT: 29,343

Showing 2,751-2,800 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.