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 68 EB

Fair

Over: LOWER NEW GERMANY ROAD

1.72 MILES EAST OF US 219, Garrett, MD

Built 1974 Load: 41.3 t ADT: 15,440

IS 68 WB

Fair

Over: LOWER NEW GERMANY ROAD

1.72 MILES EAST OF US 219, Garrett, MD

Built 1974 Load: 41.3 t ADT: 15,440

MD 22

Fair

Over: AMTRAK TRIB TO SWAN CR

0.06 MILE EAST OF US 40, Harford, MD

Built 1968 Load: 41.3 t ADT: 22,420

US 29 SB

Fair

Over: FREDERICK ROAD

0.54 MILE SOUTH OF US 40, Howard, MD

Built 1966 Load: 41.3 t ADT: 130,203

MD 175 RAMP H

Fair

Over: LITTLE PATUXENT RIVER

0.27 MI S OF US 29, Howard, MD

Built 1970 Load: 41.3 t ADT: 1,170

MD 193

Fair

Over: PAINT BRANCH

0.15 MILE WEST OF US 1, Prince George's, MD

Built 1955 Load: 41.3 t ADT: 41,260

MD 295

Fair

Over: IS 95/495

0.37 MILE SOUTH OF MD 193, Prince George's, MD

Built 1963 Load: 41.3 t ADT: 109,881

MD 363

Fair

Over: E BRANCH OF ROCK CREEK

0.70 M W OF LONG POINT RD, Somerset, MD

Built 1976 Load: 41.3 t ADT: 2,245

US 13 BUS

Fair

Over: US 50 BUS

0.02 M N OF W CHURCH ST, Wicomico, MD

Built 1961 Load: 41.3 t ADT: 29,860

US 13 SB

Fair

Over: MD 12

2.62 MILE N OF MD 513, Wicomico, MD

Built 1981 Load: 41.3 t ADT: 24,770

MARKET STREET

Fair

Over: WILLS CREEK

0.03 MI S OF N MECHANC ST, Allegany, MD

Built 1954 Load: 41.3 t ADT: 3,692

ADMIRAL DRIVE

Fair

Over: TRIBUTARY TO WEEMS CREEK

80 FT N OF JENNIFER ROAD, Anne Arundel, MD

Built 1980 Load: 41.3 t ADT: 8,862

GLEN FALLS ROAD

Fair

Over: TRIBUTARY TO NORTH BRANC

ON CARROLL COUNTY LINE, Baltimore, MD

Built 2008 Load: 41.3 t ADT: 214

MONROE STREET

Fair

Over: I-170

0.1 MI S OF FRANKLIN ST, Baltimore city, MD

Built 1976 Load: 41.3 t ADT: 21,635

CALHOUN STREET

Fair

Over: I-170

0.1 MI N OF SARATOGA ST, Baltimore city, MD

Built 1977 Load: 41.3 t ADT: 2,036

ARLINGTON AVENUE

Fair

Over: I-170

ARLINGTON AVE/ I 170, Baltimore city, MD

Built 1976 Load: 41.3 t ADT: 3,212

LINGANORE ROAD

Fair

Over: LINGANORE CREEK

0.87 MI N OF MD 144, Frederick, MD

Built 1976 Load: 41.3 t ADT: 2,702

UNIONVILLE ROAD

Fair

Over: TRIB. OF LINGANORE CREEK

AT WOODVILLE RD INT, Frederick, MD

Built 1929 Load: 41.3 t ADT: 1,309

SILVER KNOB ROAD

Fair

Over: YOUGHIOGHENY RIVER

0.1 M SE INT UNDERWOOD RD, Garrett, MD

Built 1984 Load: 41.3 t ADT: 324

STATE PARK RD

Fair

Over: MEADOW MT RUN

0.8 MI E INT GLENDALE RD, Garrett, MD

Built 1984 Load: 41.3 t ADT: 655

LEISHEAR ROAD

Fair

Over: HAMMOND BRANCH

0.2 MI N OF MD RTE 216, Howard, MD

Built 1969 Load: 41.3 t ADT: 7,344

REDLAND ROAD

Fair

Over: CSXT RR & WMATA METRO

0.2 MI E OF MD RTE 355, Montgomery, MD

Built 1980 Load: 41.3 t ADT: 20,246

HAYES LANDING ROAD

Fair

Over: NEWPORT CREEK

1.29 MI SE OF US RTE 113, Worcester, MD

Built 2000 Load: 41.3 t ADT: 130

IS 95 RAMP A

Fair

Over: RUSSELL ST

Milepost M53.6, Baltimore city, MD

Built 1976 Load: 41.3 t ADT: 6,997

I-895 NB ON RAMP

Fair

Over: FRANKFURST AVE

Milepost M8.0, Baltimore city, MD

Built 1957 Load: 41.3 t ADT: 2,452

I-95

Fair

Over: WINTERS RUN RD WINTERS R

3.2 MI N BALT-HAR CO LINE, Harford, MD

Built 1963 Load: 41.3 t ADT: 161,591

IS 97

Fair

Over: FURNACE BRANCH ROAD

0.37 MILE SOUTH OF IS 695, Anne Arundel, MD

Built 1955 Load: 41.7 t ADT: 18,621

IS 97 NBR

Fair

Over: SEVERN RUN

0.81 MILE NORTH OF MD 3, Anne Arundel, MD

Built 1991 Load: 41.7 t ADT: 102,300

IS 97 SBR

Fair

Over: SEVERN RUN

0.81 MILE NORTH OF MD 3, Anne Arundel, MD

Built 1991 Load: 41.7 t ADT: 102,300

MD 100 EBR

Fair

Over: JUMPERS HOLE ROAD

0.67 MILE EAST OF MD 2, Anne Arundel, MD

Built 1971 Load: 41.7 t ADT: 26,792

IS 595

Fair

Over: IS 97 EBR

4.6 MI E OF MD 424, Anne Arundel, MD

Built 1987 Load: 41.7 t ADT: 159,360

MD 665 EB

Fair

Over: CHURCH CREEK

0.29 MILE EAST OF MD 2, Anne Arundel, MD

Built 1991 Load: 41.7 t ADT: 31,071

US 1 ALT

Fair

Over: IS 695

1.45 N OF US 1, Baltimore, MD

Built 1957 Load: 41.7 t ADT: 23,632

IS 83/IS 695

Fair

Over: THORNTON ROAD

1.09 MI S OF MD 139, Baltimore, MD

Built 1954 Load: 41.7 t ADT: 222,500

MD 147

Fair

Over: IS 695

1.37 MI N OF BALT CITY, Baltimore, MD

Built 1961 Load: 41.7 t ADT: 31,160

MD 313

Fair

Over: MARSHYHOPE CREEK

1.71 MILE SOUTH OF MD 308, Caroline, MD

Built 1962 Load: 41.7 t ADT: 9,737

MD 850C

Fair

Over: TALBOT BRANCH

0.03 M S OF FRANKLIN RD, Carroll, MD

Built 1931 Load: 41.7 t ADT: 999

US 40 & RMPS 5 & 6

Fair

Over: BR OF SWAN CREEK

0.03 MILE SOUTH OF MD 22, Harford, MD

Built 1968 Load: 41.7 t ADT: 26,751

MD 212

Fair

Over: IS 495 IL

.189 M S OF TOWHEE AVENUE, Prince George's, MD

Built 1964 Load: 41.7 t ADT: 17,022

US 50 EB/301 NB

Fair

Over: PINEY CREEK

1.21 MILES EAST OF MD 552, Queen Anne's, MD

Built 1950 Load: 41.7 t ADT: 65,701

MD 304

Fair

Over: CORSICA CREEK

0.88 MILE WEST OF MD 213, Queen Anne's, MD

Built 1985 Load: 41.7 t ADT: 1,732

MD 544

Fair

Over: RED LION BRANCH

0.56 MILE EAST OF MD 290, Queen Anne's, MD

Built 1972 Load: 41.7 t ADT: 1,551

MD 34

Fair

Over: POTOMAC RIV & C&O CANAL

ON WEST VIRGINIA ST LINE, Washington, MD

Built 2005 Load: 41.7 t ADT: 5,900

US 13 BUS NB

Fair

Over: NORFOLK SOUTHERN RR

1.0 MILE NORTH OF US 50BU, Wicomico, MD

Built 1930 Load: 41.7 t ADT: 16,405

US 13 BUS NB

Fair

Over: TONYTANK POND

0.38 MILE NORTH OF MD 513, Wicomico, MD

Built 1995 Load: 41.7 t ADT: 11,480

MD 313

Fair

Over: NANTICOKE RIVER

ON DORCHESTER CO LINE, Wicomico, MD

Built 1987 Load: 41.7 t ADT: 2,420

MD 374

Fair

Over: POCOMOKE RIVER

ON WICOMICO CO LINE, Worcester, MD

Built 2001 Load: 41.7 t ADT: 1,196

GREEN SPRING ROAD

Fair

Over: MILL RUN

0.08 MI N OF MAIN ST, Allegany, MD

Built 1935 Load: 41.7 t ADT: 812

WISEBURG ROAD

Fair

Over: LITTLE FALLS

100 FT W OF GRAYSTONE RD, Baltimore, MD

Built 1988 Load: 41.7 t ADT: 1,600

I-83 RAMP H

Fair

Over: HILLEN STREET

I-83 OVER HILLEN STREET, Baltimore city, MD

Built 1975 Load: 41.7 t ADT: 82,593

Showing 1,601-1,650 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.