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 695 OL

Fair

Over: MD 151 NBR

0.62 MILE NORTH OF MD 150, Baltimore, MD

Built 1967 Load: 28.6 t ADT: 41,012

DIAMOND POINT ROAD

Fair

Over: MD 695

0.47 MI W OF MD 150, Baltimore, MD

Built 1970 Load: 28.6 t ADT: 999

MD 31

Fair

Over: DICKERSON RUN

0.05 MI W OF NEW WINDSOR, Carroll, MD

Built 1924 Load: 28.6 t ADT: 4,861

MD 24

Fair

Over: NORTH STIRRUP RUN

3.09 MILES NORTH OF MD 23, Harford, MD

Built 1917 Load: 28.6 t ADT: 3,572

US 29

Fair

Over: PATUXENT RIVER

ON HOWARD CO LINE, Montgomery, MD

Built 1954 Load: 28.6 t ADT: 49,203

MD 303

Fair

Over: NORWICH CREEK

0.12 MILE S OF MD 404AL, Talbot, MD

Built 1928 Load: 28.6 t ADT: 922

PLEASANTVILLE ROAD

Fair

Over: LITTLE GUNPOWDER FALLS

1.0 MI NE LONG GREEN PIKE, Baltimore, MD

Built 1987 Load: 28.6 t ADT: 4,715

BOND ROAD

Fair

Over: DEER CREEK

200 FT W OF WEST LIBERTY, Baltimore, MD

Built 1988 Load: 28.6 t ADT: 812

CIRCLE ROAD

Fair

Over: ROLAND RUN

100 FT WEST OF RUXTON RD, Baltimore, MD

Built 1988 Load: 28.6 t ADT: 1,255

PLEASANT GROVE ROA

Fair

Over: MCGILL RUN

0.3 MI S OF DOVER RD, Baltimore, MD

Built 1920 Load: 28.6 t ADT: 510

LHIRONDELLE CLUB

Fair

Over: ROLAND RUN

2.77 MI S OF RUXTON RD, Baltimore, MD

Built 1992 Load: 28.6 t ADT: 104

TWILIGHT COURT

Fair

Over: REDHOUSE CREEK

0.2 MILES WEST OF IS 95, Baltimore, MD

Built 1990 Load: 28.6 t ADT: 227

COLDSPRING RAMP TO

Fair

Over: MTA LIGHT RAIL

ON RAMP SB JFX I-83, Baltimore city, MD

Built 1962 Load: 28.6 t ADT: 23,800

NORTH EAST ISLES D

Fair

Over: STONY RUN

0.1 MI S OF MD 7, Cecil, MD

Built 1992 Load: 28.6 t ADT: 547

LINTON ROAD

Fair

Over: LITTLE MORGAN RUN

1.25 MILES N OF MD 26, Carroll, MD

Built 1980 Load: 28.6 t ADT: 867

HARBAUGH VALLEY RO

Fair

Over: BRANCH OF FRIENDS CREEK

0.15 MI NE OF MD RTE 550, Frederick, MD

Built 1985 Load: 28.6 t ADT: 713

DOGWOOD DRIVE

Fair

Over: TRIBUTARY NO. 8

0.7 MI EAST OF MD 355, Frederick, MD

Built 1986 Load: 28.6 t ADT: 2,485

FASHION WAY

Fair

Over: TRIB / WINTERS RUN

0.5 MILES N OF MD 7, Harford, MD

Built 1972 Load: 28.6 t ADT: 565

PLEASANTVILLE ROAD

Fair

Over: WINTERS RUN

1.5 MILES N OF MD 152, Harford, MD

Built 1958 Load: 28.6 t ADT: 3,320

SIGN POST ROAD

Fair

Over: BACK CREEK

1 MI N OF SAM BARNES ROAD, Somerset, MD

Built 1985 Load: 28.6 t ADT: 784

UPPER LEVEL ROADWA

Fair

Over: LOWER LEVEL ROADWAY

BWI AIRPORT, Anne Arundel, MD

Built 2002 Load: 28.6 t ADT: 22,093

IS 695

Fair

Over: PATAPSCO RIVER

BALTIMORE COUNTY LINE, Anne Arundel, MD

Built 1958 Load: 29.0 t ADT: 120,772

US 40

Fair

Over: BRANCH OF ROCK CREEK

.036 MILE EAST OF US 40AL, Frederick, MD

Built 1947 Load: 29.0 t ADT: 47,332

US 1 BU

Fair

Over: BYNUM RUN

.06 M N OF MOORES MILL RD, Harford, MD

Built 1953 Load: 29.0 t ADT: 11,230

US 29 SB

Fair

Over: US 40

1.35 MILES SOUTH OF IS 70, Howard, MD

Built 1966 Load: 29.0 t ADT: 98,360

RIDGE ROAD

Fair

Over: US 29 RAMP H (4)

0.28 MILE EAST OF US 29, Howard, MD

Built 1966 Load: 29.0 t ADT: 5,121

MD 290

Fair

Over: JACOBS CREEK

0.23 MILE SOUTH OF US 301, Kent, MD

Built 1947 Load: 29.0 t ADT: 2,461

MD 290

Fair

Over: SWANTOWN CREEK

1.91 MILES S OF US 301, Kent, MD

Built 1947 Load: 29.0 t ADT: 2,461

MD 119

Fair

Over: LONG DRAUGHT BRANCH

1.66 MILE NORTH OF MD 124, Montgomery, MD

Built 1990 Load: 29.0 t ADT: 10,766

COULBOURNE MILL RD

Fair

Over: US 13

1.21 MI S OF MD 12, Wicomico, MD

Built 1976 Load: 29.0 t ADT: 3,411

TEMPERANCE ROW

Fair

Over: GEORGES CREEK

0.08 MI N OF MD 935, Allegany, MD

Built 1976 Load: 29.0 t ADT: 206

FOREST GROVE ROAD

Fair

Over: WILLS CREEK

0.11 MI W OF SHELLSBUR RD, Allegany, MD

Built 1977 Load: 29.0 t ADT: 393

CHESACO AVENUE

Fair

Over: CSX RAILROAD

0.2 MI S US RTE 40, Baltimore, MD

Built 1957 Load: 29.0 t ADT: 3,260

BIRMINGHAM AVENUE

Fair

Over: TRIBUTARY TO HERRING RUN

0.10 MI N. OF TAYLOR AVE., Baltimore, MD

Built 1954 Load: 29.0 t ADT: 630

I-83 NB

Fair

Over: GAY STREET

0.2 MI S OF ORLEANS ST, Baltimore city, MD

Built 1975 Load: 29.0 t ADT: 79,335

I-83 NORTHBOUND

Fair

Over: PUMPING STATION

0.5 MI N OF NORTH AVENUE, Baltimore city, MD

Built 1959 Load: 29.0 t ADT: 63,086

I-83

Fair

Over: MTA AND JONES FALLS

1.1 MI S OF COLD SPRING L, Baltimore city, MD

Built 1959 Load: 29.0 t ADT: 120,795

COLD SPRING LANE

Fair

Over: HERRING RUN

0.2 MI E OF HILLEN RD, Baltimore city, MD

Built 1929 Load: 29.0 t ADT: 16,151

CROTHERS ROAD

Fair

Over: NORTHEAST CREEK

1.52 MI N OF MD 274, Cecil, MD

Built 1964 Load: 29.0 t ADT: 370

ARNOLD ROAD

Fair

Over: BEAVER RUN

0.03 MI W OF POOLE ROAD, Carroll, MD

Built 1974 Load: 29.0 t ADT: 348

UNIONVILLE ROAD

Fair

Over: WELDON CREEK

AT BLACK ANKLE RD INT, Frederick, MD

Built 1929 Load: 29.0 t ADT: 493

PEA RIDGE SPUR

Fair

Over: ELK LICK RUN

150 E OF WESTERNPORT RD, Garrett, MD

Built 2000 Load: 29.0 t ADT: 70

CHESTNUT HILL ROAD

Fair

Over: CABBAGE RUN

0.7 MILES NW OF MD 543, Harford, MD

Built 1938 Load: 29.0 t ADT: 642

BARNESVILLE ROAD

Fair

Over: LITTLE MONOCACY RIVER

0.6 MI E OF MT EPHRAIM RD, Montgomery, MD

Built 1940 Load: 29.0 t ADT: 918

VIRGINIA AVENUE

Fair

Over: CATTAIL BRANCH

0.01 MI N OF W FOREST RD, Prince George's, MD

Built 1969 Load: 29.0 t ADT: 857

NORTH DRIVE

Fair

Over: LITTLE PAINT BRANCH

CAPITAL BELTWAY TO EXIT 2, Prince George's, MD

Built 1947 Load: 29.0 t ADT: 700

I-395 RAMP F

Fair

Over: MIDDLE BR RAMP G&H I95

0.8 MI. S. OF CONWAY ST., Baltimore city, MD

Built 1979 Load: 29.0 t ADT: 15,362

I-695 IL

Fair

Over: CSXT RR

0.44 MI S OF DOCK ROAD, Baltimore city, MD

Built 1978 Load: 29.0 t ADT: 17,979

I-695 OL

Fair

Over: CSXT RR

0.44 MI S OF DOCK ROAD, Baltimore city, MD

Built 1975 Load: 29.0 t ADT: 19,157

KENNEL ROAD

Fair

Over: MD RTE 273

0.75MI EAST OF MD RTE 213, Cecil, MD

Built 1960 Load: 29.0 t ADT: 100

Showing 401-450 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.