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

US 40 SCN

Fair

Over: SNIB HOLLOW RUN

0.48 M E OF STONE ROAD, Allegany, MD

Built 1916 Load: 43.1 t ADT: 281

MCDONOGH ROAD

Fair

Over: CSX TRANSPORTATION

0.06 MILE WEST OF IS 795, Baltimore, MD

Built 1941 Load: 43.1 t ADT: 13,380

IS 95 NBR

Fair

Over: US1 AMTRAK POTOMAC AVE

0.85 MILE SOUTH OF IS 695, Baltimore, MD

Built 1970 Load: 43.1 t ADT: 179,291

IS 95 SBR

Fair

Over: US1 AMTRAK POTOMAC AVE

0.85 MILE SOUTH OF IS 695, Baltimore, MD

Built 1970 Load: 43.1 t ADT: 176,796

MD 6

Fair

Over: ZEKIAH SWAMP

0.09 M W OF BR NO 0800600, Charles, MD

Built 1933 Load: 43.1 t ADT: 9,300

MD 16

Fair

Over: PARSONS CREEK

1.28 M N OF SMITHVILLE RD, Dorchester, MD

Built 2005 Load: 43.1 t ADT: 652

MD 335

Fair

Over: BLACKWATER RIVER

4.86 MILE NORTH OF MD 336, Dorchester, MD

Built 1991 Load: 43.1 t ADT: 1,381

US 40 ALT

Fair

Over: CASSELMAN RIVER

0.82 MILE EAST OF MD 495, Garrett, MD

Built 1932 Load: 43.1 t ADT: 3,841

US 29 SB

Fair

Over: IS 70

0.44 MILE SOUTH OF MD 99, Howard, MD

Built 1966 Load: 43.1 t ADT: 10,111

MD 108 WB

Fair

Over: US 29

0.36 MILE WEST OF MD 108H, Howard, MD

Built 1986 Load: 43.1 t ADT: 19,880

US 301 SB

Fair

Over: MD 290

0.99 M S OF CECIL CO LINE, Kent, MD

Built 1962 Load: 43.1 t ADT: 9,710

MD 185

Fair

Over: PROPOSED ROADWAY

0.92 MILE SOUTH OF MD 97, Montgomery, MD

Built 1968 Load: 43.1 t ADT: 36,532

MD 117

Fair

Over: GREAT SENECA CREEK

1.82 MILES EAST OF MD 118, Montgomery, MD

Built 1951 Load: 43.1 t ADT: 18,752

US 1

Fair

Over: IS 95

1.19 MILE NORTH OF MD 193, Prince George's, MD

Built 1963 Load: 43.1 t ADT: 48,232

IS 95 IL

Fair

Over: RHODE ISLAND AVENUE

0.34 MILE SOUTH OF US 1, Prince George's, MD

Built 1963 Load: 43.1 t ADT: 215,560

DARCY ROAD

Fair

Over: IS 95

1.44 MI N OF MD 4, Prince George's, MD

Built 1964 Load: 43.1 t ADT: 4,040

MD 4

Fair

Over: KINGSTON CREEK

2.07 MILES N OF MD 235, St. Mary's, MD

Built 1980 Load: 43.1 t ADT: 26,801

IS 70 EB

Fair

Over: NORFOLK SOUTHERN RR

0.35 MILE EAST OF US 11, Washington, MD

Built 1965 Load: 43.1 t ADT: 38,145

IS 70 WB

Fair

Over: NORFOLK SOUTHERN RR

0.35 MILE EAST OF US 11, Washington, MD

Built 1965 Load: 43.1 t ADT: 34,890

BOYD ROAD

Fair

Over: IS 70 WBR

3.04 MI E OF MD 56, Washington, MD

Built 1965 Load: 43.1 t ADT: 1,392

W ZION RD

Fair

Over: US 13

@ US 13, Wicomico, MD

Built 1974 Load: 43.1 t ADT: 3,190

FLINTSTONE CREEK R

Fair

Over: FLINTSTONE CREEK

0.30 MI S OF PA LINE, Allegany, MD

Built 1930 Load: 43.1 t ADT: 141

POCOCK ROAD

Fair

Over: LITTLE GUNPOWDER FALLS

0.6 MI E HESS ROAD, Baltimore, MD

Built 1978 Load: 43.1 t ADT: 230

CORBETT ROAD

Fair

Over: TRIBUTARY TO GUNPOWDER F

1.1 MILES EAST OF MD 45, Baltimore, MD

Built 1922 Load: 43.1 t ADT: 720

EAGER STREET

Fair

Over: CENTRAL BOOKING PARKING

0.2 MI E OF GREENMOUNT AV, Baltimore city, MD

Built 1913 Load: 43.1 t ADT: 2,382

COLDSPRING LANE

Fair

Over: I-83

COLDSPRING LN OVER I-83, Baltimore city, MD

Built 1962 Load: 43.1 t ADT: 20,993

WARBURTON ROAD

Fair

Over: LITTLE NORTHEAST CREEK

1.39 MILES NE OF MD 272, Cecil, MD

Built 1994 Load: 43.1 t ADT: 3,672

OAKLAND-SANG RUN R

Fair

Over: FORK RUN

0.05 MI N HOYES RUN RD, Garrett, MD

Built 2005 Load: 43.1 t ADT: 454

TOLLGATE ROAD

Fair

Over: HEAVENLY WATERS

0.6 MILES W OF BUS US 1, Harford, MD

Built 2000 Load: 43.1 t ADT: 8,025

EDGEWOOD ROAD

Fair

Over: OTTER POINT CREEK (S)

0.4 MILES S OF MD 7, Harford, MD

Built 1987 Load: 43.1 t ADT: 9,554

PARTNERSHIP RD

Fair

Over: RUSSELL BRANCH

1.2 MI S OF JCT SR 107, Montgomery, MD

Built 1920 Load: 43.1 t ADT: 2,174

SCOTT DRIVE

Fair

Over: WATTS BRANCH

0.1 MI W OF WOOTTON PKWY, Montgomery, MD

Built 1990 Load: 43.1 t ADT: 3,921

BRINKLEY ROAD

Fair

Over: HENSON CREEK & HENSON CR

0.21 MI NE OF ROBERTS DR, Prince George's, MD

Built 2012 Load: 43.1 t ADT: 21,647

KING ROAD

Fair

Over: TRIBUTARY OF LITTLE ANTI

0.1 MI S OF MD RTE 34, Washington, MD

Built 1992 Load: 43.1 t ADT: 844

I-95

Fair

Over: LITTLE GUNPOWDER FALLS

BALTIMORE-HARFORD CO LINE, Baltimore, MD

Built 1963 Load: 43.1 t ADT: 178,830

IS 95 SB

Fair

Over: GUSRYAN STREET

500 FT S OF DUNDALK AVE, Baltimore city, MD

Built 1976 Load: 43.1 t ADT: 76,836

MD 935

Fair

Over: BUTCHER RUN

0.03 M N OF BARTLETT ST, Allegany, MD

Built 1930 Load: 43.5 t ADT: 1,430

IS 68 RAMP D(5)

Fair

Over: CENTRE STREET

0.52 MI E OF US 48H, Allegany, MD

Built 1968 Load: 43.5 t ADT: 14,023

MD 135D W VA 46

Fair

Over: N BRANCH POTOMAC RIVER

ON WEST VIRGINIA LINE, Allegany, MD

Built 1985 Load: 43.5 t ADT: 4,527

IS 595

Fair

Over: ADMIRAL DRIVE

0.39 MILE EAST OF MD 2, Anne Arundel, MD

Built 1953 Load: 43.5 t ADT: 123,940

IS 695

Fair

Over: INGLESIDE AVENUE

0.49 MILE SOUTH OF US 40, Baltimore, MD

Built 1957 Load: 43.5 t ADT: 180,306

IS 95 NBR

Fair

Over: IS 695

0.83 MILE NORTH OF US 1, Baltimore, MD

Built 1969 Load: 43.5 t ADT: 91,742

MD 702 WBR

Fair

Over: MD 150

1.20 MI E OF MD 695, Baltimore, MD

Built 1970 Load: 43.5 t ADT: 27,579

IS 95 NBR & RAMP

Fair

Over: SULPHUR SPRING ROAD

0.32 MILE SOUTH OF IS 695, Baltimore, MD

Built 1971 Load: 43.5 t ADT: 176,796

MD 702 EBR

Fair

Over: AMTRAK & 695 RMP 7

0.20 MI E OF MD 695, Baltimore, MD

Built 1972 Load: 43.5 t ADT: 18,644

MD 695 OL

Fair

Over: AMTRAK

0.08 MI N OF US 40, Baltimore, MD

Built 1973 Load: 43.5 t ADT: 36,361

MD 695 IL

Fair

Over: AMTRAK

0.22 MI N OF MD 702, Baltimore, MD

Built 1973 Load: 43.5 t ADT: 36,361

IS 795 NBR

Fair

Over: CHURCH ROAD

0.58 MI S OF BR NO 033340, Baltimore, MD

Built 1985 Load: 43.5 t ADT: 68,761

IS 795 SBR

Fair

Over: CHURCH ROAD

0.58 MI S OF BR NO 033340, Baltimore, MD

Built 1985 Load: 43.5 t ADT: 68,761

MD 6

Fair

Over: ZEKIAH SWAMP

0.04 M E OF BR NO 0800600, Charles, MD

Built 1929 Load: 43.5 t ADT: 12,432

Showing 1,751-1,800 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.