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

RICHARDSON ROAD

Fair

Over: BURNT MILL BRANCH

0.84 MI N OF MD 346, Wicomico, MD

Built 1974 Load: 37.2 t ADT: 974

IS 95 NB C/D ROAD

Fair

Over: WASH BLVD & GWYNNS FALLS

I 95 AT WASH BLVD, Baltimore city, MD

Built 1977 Load: 37.2 t ADT: 10,520

IS 95 RAMP D

Fair

Over: ANN RD RUS ST GWY FALL

I-95 RAMP D AT RUSSELL ST, Baltimore city, MD

Built 1977 Load: 37.2 t ADT: 17,492

IS 95 RAMP H

Fair

Over: OLD ANNAN RD MIDDLE BR

0.3 MI E RUSSELL ST, Baltimore city, MD

Built 1979 Load: 37.2 t ADT: 35,059

IS 895

Fair

Over: BOSTON STREET

MILE POINT 11.53, Baltimore city, MD

Built 1957 Load: 37.2 t ADT: 77,721

IS 895

Fair

Over: AMTRAK NSRR & CSXT

Milepost M12.86, Baltimore city, MD

Built 1957 Load: 37.2 t ADT: 72,034

I-895 NB

Fair

Over: B&O RR COUNTY ROADS

Milepost 0.7, Howard, MD

Built 1972 Load: 37.2 t ADT: 7,203

FORT FREDERICK ACC

Fair

Over: C&O CANAL

0.3 miles from Fort Frede, Washington, MD

Built 1973 Load: 37.2 t ADT: 50

CLARA BARTON PARKW

Fair

Over: LITTLE FALLS BRANCH

4.5 MILES SOUTH OF I-495., Montgomery, MD

Built 1961 Load: 37.2 t ADT: 16,120

SUITLAND PARKWAY (

Fair

Over: HENSON CREEK

0.1 MILES EAST OF FORESTV, Prince George's, MD

Built 1996 Load: 37.2 t ADT: 19,550

PALMER ROAD SOUTH

Fair

Over: E PALMER RD STONEY CREEK

500M E OF WOOD RD, Montgomery, MD

Built 1981 Load: 37.3 t ADT: 2,750

MD 450

Fair

Over: BACON RIDGE BRANCH

0.89 MI E OF RUTLAND RD, Anne Arundel, MD

Built 2008 Load: 37.3 t ADT: 7,520

US 220

Fair

Over: MILL RUN

.13 MILE NORTH OF MD 830B, Allegany, MD

Built 1950 Load: 37.6 t ADT: 7,111

IS 68

Fair

Over: PATTERSON AVENUE

0.54 MILE EAST OF US 220, Allegany, MD

Built 1968 Load: 37.6 t ADT: 46,611

IS 68 WB

Fair

Over: MARYLAND 736 (MIDLOTHIAN

0.83 MILE WEST OF MD 936, Allegany, MD

Built 1972 Load: 37.6 t ADT: 23,640

IS 695 OL

Fair

Over: IS 97

0.63 MI S OF MD 648E, Anne Arundel, MD

Built 1957 Load: 37.6 t ADT: 97,630

HAMMONDS FERRY RD

Fair

Over: PATAPSCO RIVER

ON AA CO/ BALTO CO LINE, Anne Arundel, MD

Built 1961 Load: 37.6 t ADT: 8,800

MD 100 WBR

Fair

Over: OAKWOOD ROAD

0.82 MILE EAST OF MD 3BU, Anne Arundel, MD

Built 1963 Load: 37.6 t ADT: 35,961

MD 10 SBR

Fair

Over: MD 177

0.17 MI N OF MD 100, Anne Arundel, MD

Built 1988 Load: 37.6 t ADT: 43,170

MD 695 IL

Fair

Over: AMTRAK & BACK RIVER

0.75 MILE SOUTH OF MD 150, Baltimore, MD

Built 1968 Load: 37.6 t ADT: 49,829

MD 702 WBR

Fair

Over: MACE AVENUE

0.29 MILE EAST OF MD 695, Baltimore, MD

Built 1970 Load: 37.6 t ADT: 19,406

IS 95 SBR

Fair

Over: OAKLAND ROAD

0.76 MILE NORTH OF IS 195, Baltimore, MD

Built 1969 Load: 37.6 t ADT: 176,796

MD 151

Fair

Over: MD 695

1.01 MILES N OF MD 20B, Baltimore, MD

Built 1971 Load: 37.6 t ADT: 15,651

MD 6

Fair

Over: ZEKIAH SWAMP

0.04 M W OF BR NO 0800500, Charles, MD

Built 1929 Load: 37.6 t ADT: 12,432

US 340 WBR

Fair

Over: S MOUNTAIN ROAD

0.27 MILE EAST OF MD 180, Frederick, MD

Built 1964 Load: 37.6 t ADT: 23,492

MD 135

Fair

Over: CSX TRANS.

0.66 MILE EAST OF MD 495A, Garrett, MD

Built 1930 Load: 37.6 t ADT: 3,198

MD 24

Fair

Over: BR OF DEER CREEK

0.42 M S OF DAVIS ROAD, Harford, MD

Built 1986 Load: 37.6 t ADT: 3,193

MD 355 NB

Fair

Over: IS 495 IL & Ramp 5

1.31 MILES S OF MD 547, Montgomery, MD

Built 1960 Load: 37.6 t ADT: 55,020

MD 223

Fair

Over: PISCATAWAY CREEK

0.1 MILE NORTH OF MD 223A, Prince George's, MD

Built 1974 Load: 37.6 t ADT: 112

US 50

Fair

Over: AMTRAK WMATA

0.74 MILE WEST OF IS 95, Prince George's, MD

Built 1959 Load: 37.6 t ADT: 108,214

IS 95X NB

Fair

Over: PAINT BRANCH

0.44 M S OF BR NO 1612400, Prince George's, MD

Built 1967 Load: 37.6 t ADT: 1,880

IS 95 OL

Fair

Over: RHODE ISLAND AVENUE

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

Built 1963 Load: 37.6 t ADT: 215,560

IS 95 OL

Fair

Over: RITCHIE MARLBORO ROAD

1.64 MILES S OF MD 214, Prince George's, MD

Built 1964 Load: 37.6 t ADT: 201,196

IS 95/IS 495

Fair

Over: POTOMAC RIVER

ON VIRGINIA LINE, Prince George's, MD

Built 2008 Load: 37.6 t ADT: 135,287

MD 198 EB

Fair

Over: IS 95

1.85 MILES WEST OF MD 216, Prince George's, MD

Built 1971 Load: 37.6 t ADT: 49,801

US 11

Fair

Over: IS 81

0.92 MILE NORTH OF MD 63, Washington, MD

Built 1965 Load: 37.6 t ADT: 15,552

US 50 EB

Fair

Over: HERRING CREEK

0.19 MILE WEST OF MD 707A, Worcester, MD

Built 1942 Load: 37.6 t ADT: 21,431

US 50 WB

Fair

Over: HERRING CREEK

0.19 MILE WEST OF MD 707A, Worcester, MD

Built 1942 Load: 37.6 t ADT: 21,431

US 113 NB

Fair

Over: BACHELORS BRANCH

3.1 MILES NORTH OF MD 756, Worcester, MD

Built 1971 Load: 37.6 t ADT: 2,751

GLEBE RD

Fair

Over: SCOTCHMAN CREEK

0.32 MI NW OF MD 213, Cecil, MD

Built 1985 Load: 37.6 t ADT: 1,465

MAYBERRY ROAD

Fair

Over: BIG PIPE CREEK

0.06 MI N OF UNGER RD, Carroll, MD

Built 1987 Load: 37.6 t ADT: 762

OTTERDALE MILL ROA

Fair

Over: BIG PIPE CREEK

0.25 MI S OF NASBAUM RD, Carroll, MD

Built 1930 Load: 37.6 t ADT: 1,268

CARROLLTON ROAD

Fair

Over: DEEP RUN

0.02 MI W OF LEES MILL RD, Carroll, MD

Built 1960 Load: 37.6 t ADT: 709

RED BRIDGE ROAD

Fair

Over: FALLING BRANCH

0.3 MILES E OF FAWN GR RD, Harford, MD

Built 1975 Load: 37.6 t ADT: 113

PROSPECT ROAD

Fair

Over: DEEP CREEK

1.1 MILES N OF MD 136, Harford, MD

Built 1950 Load: 37.6 t ADT: 575

LEWIS LANE

Fair

Over: AMTRAK RAILROAD

0.1 MILES E OF US 40, Harford, MD

Built 1980 Load: 37.6 t ADT: 5,745

NEEDWOOD ROAD

Fair

Over: ROCK CREEK

.6 MI W OF MUNCASTER MILL, Montgomery, MD

Built 1965 Load: 37.6 t ADT: 6,446

KEMP MILL ROAD

Fair

Over: TRIBUTARY TO NORTHWEST B

200 FT S OF GLENALLAN AVE, Montgomery, MD

Built 1964 Load: 37.6 t ADT: 12,820

CARTER AVENUE

Fair

Over: AMTRAK RAILROAD

0.05 MI SOUTH OF MD 564, Prince George's, MD

Built 1979 Load: 37.6 t ADT: 16,914

RUMBLEY ROAD

Fair

Over: TEAGUE CREEK

1.2 MI EAST OF MD 361, Somerset, MD

Built 1978 Load: 37.6 t ADT: 223

Showing 1,251-1,300 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.