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 95 SB

Fair

Over: WB MCCOMAS ST

0.9 MI. S. OF TUNNEL, Baltimore city, MD

Built 1982 Load: 47.6 t ADT: 65,378

FAIT AVENUE

Fair

Over: I-895

MILE POINT 11.98, Baltimore city, MD

Built 1957 Load: 47.6 t ADT: 485

I-695 IL

Fair

Over: DOCK ROAD

0.2 MI S OF FSK BR W ABUT, Baltimore city, MD

Built 1979 Load: 47.6 t ADT: 17,979

I-95

Fair

Over: LITTLE NORTHEAST CREEK

Milepost M101.2, Cecil, MD

Built 1963 Load: 47.6 t ADT: 78,625

I-95 NB

Fair

Over: BYNUM RUN

Milepost M79.1, Harford, MD

Built 1963 Load: 47.6 t ADT: 63,977

IS 68 RAMP C(7)

Fair

Over: MECHANIC STREET

0.44 MI E OF US 48H, Allegany, MD

Built 1968 Load: 48.1 t ADT: 13,163

MD 175

Fair

Over: MD 295

1.15 MI N OF MD 713, Anne Arundel, MD

Built 1952 Load: 48.1 t ADT: 19,272

MD 3D

Fair

Over: IS 97

0.3 MI S OF BUS 3, Anne Arundel, MD

Built 1990 Load: 48.1 t ADT: 3,511

IS 695 RAMP 1

Fair

Over: WHITEMARSH BRANCH

0.04 MI N OF MD 147, Baltimore, MD

Built 1961 Load: 48.1 t ADT: 3,892

ROCKY RIDGE ROAD (

Fair

Over: MONOCACY RIVER

1.3 MI W OF CARROLL CO, Frederick, MD

Built 1932 Load: 48.1 t ADT: 937

IS 70 WBR

Fair

Over: MONUMENT ROAD

1.59 MILES E OF WASH CO, Frederick, MD

Built 1968 Load: 48.1 t ADT: 83,710

MD 75

Fair

Over: IS 70

0.24 MI S OF MD 144FB, Frederick, MD

Built 1973 Load: 48.1 t ADT: 9,752

IS 70 EBR

Fair

Over: BILL MOXELY ROAD

1.73 MI W OF CARROLL CO, Frederick, MD

Built 1974 Load: 48.1 t ADT: 69,020

IS 70 WBR

Fair

Over: BILL MOXELY ROAD

1.73 MI W OF CARROLL CO, Frederick, MD

Built 1974 Load: 48.1 t ADT: 69,020

I 70 RAMP B (4)

Fair

Over: MD 180

I-70/MD 351 INTERCHANGE, Frederick, MD

Built 1996 Load: 48.1 t ADT: 12,602

IS 68 WB

Fair

Over: MD 42

0.33 MILE WEST OF MD 742, Garrett, MD

Built 1974 Load: 48.1 t ADT: 12,240

MD 22

Fair

Over: CSX TRANS.

0.06 MILE WEST OF US 40, Harford, MD

Built 1968 Load: 48.1 t ADT: 25,940

MD 28

Fair

Over: CSXT WMATA RAMP

0.19 MILE WEST OF MD 911, Montgomery, MD

Built 1981 Load: 48.1 t ADT: 27,020

IS 270 NBR

Fair

Over: BR OF LITTLE BENNETT CRK

0.32 MILE SOUTH OF MD 109, Montgomery, MD

Built 1952 Load: 48.1 t ADT: 94,940

MD 8

Fair

Over: US 50/US 301

0.32 MILE SOUTH OF MD 18A, Queen Anne's, MD

Built 1984 Load: 48.1 t ADT: 16,391

US 40 ALT

Fair

Over: LANDIS SPRING BRANCH

0.20 MILE EAST OF MD 741, Washington, MD

Built 1900 Load: 48.1 t ADT: 6,082

IS 70 WB

Fair

Over: LICKING CREEK CO ROAD

0.27 MILE EAST OF US 40, Washington, MD

Built 1965 Load: 48.1 t ADT: 23,201

IS 70 WB

Fair

Over: BEAVER CREEK

0.08 MILE WEST OF MD 66, Washington, MD

Built 1966 Load: 48.1 t ADT: 72,140

ENSOR MILL ROAD

Fair

Over: PINEY CREEK

0.5 MI N OF BELFAST ROAD, Baltimore, MD

Built 1978 Load: 48.1 t ADT: 1,356

JOPPA ROAD

Fair

Over: MTA LIGHT RAIL

50 FT W BELLONA AVE, Baltimore, MD

Built 1986 Load: 48.1 t ADT: 21,549

TRENTON ROAD

Fair

Over: PINEY RUN

0.8 MI SW OF BLACKROCK RD, Baltimore, MD

Built 1970 Load: 48.1 t ADT: 1,050

SAN MARTIN DRIVE

Fair

Over: STONEY RUN

0.5 MI N HOWARD & 29TH ST, Baltimore city, MD

Built 1930 Load: 48.1 t ADT: 2,034

RUSSELL ROAD

Fair

Over: GRAMIES RUN

0.05 MI N OF GALLAHER RD, Cecil, MD

Built 1982 Load: 48.1 t ADT: 204

HERRINGTON MANOR R

Fair

Over: YOUGHIOGHENY RIVER

0.2MI S OF FINGERBOARD RD, Garrett, MD

Built 1960 Load: 48.1 t ADT: 1,782

BROOKVILLE ROAD

Fair

Over: CSXT RAILROAD

0.4 MI SW OF MD 192, Montgomery, MD

Built 1976 Load: 48.1 t ADT: 19,611

HYATTSTOWN MILL RO

Fair

Over: TRIBUTARY OF LITTLE BENN

0.12 MI. E. OF JCT SR 355, Montgomery, MD

Built 2006 Load: 48.1 t ADT: 62

CHERRYWOOD LANE

Fair

Over: I-95/I-495

0.52 MI WEST OF MD 201, Prince George's, MD

Built 1990 Load: 48.1 t ADT: 10,413

WHITEHAVEN FERRY R

Fair

Over: WAUKIKI CREEK

1.36 MI W OF WIDGEON, Somerset, MD

Built 2002 Load: 48.1 t ADT: 404

TOMS ROAD

Fair

Over: BEAVER CREEK

1.5 MI SE OF ALT US RTE 4, Washington, MD

Built 1985 Load: 48.1 t ADT: 192

I-95 SB

Fair

Over: BYNUM RUN

MILEPOST M79.1, Harford, MD

Built 1963 Load: 48.1 t ADT: 66,515

IS 68

Fair

Over: FIFTEEN MILE CREEK

0.08 MI E OF US 40 SCN, Allegany, MD

Built 1990 Load: 48.5 t ADT: 18,400

MD 295 NBR

Fair

Over: AMTRAK STONY RUN

0.14 MI S OF IS 195, Anne Arundel, MD

Built 1950 Load: 48.5 t ADT: 67,307

MD 100 EBR

Fair

Over: MD 174

0.59 MILE NORTH OF IS 97, Anne Arundel, MD

Built 1963 Load: 48.5 t ADT: 75,406

MD 100 WBR

Fair

Over: MD 174

0.59 MILE NORTH OF IS 97, Anne Arundel, MD

Built 1963 Load: 48.5 t ADT: 75,406

IS 83 SBR

Fair

Over: Bunker Hill Road

1.08 MI N OF MD 137, Baltimore, MD

Built 1955 Load: 48.5 t ADT: 59,820

OLD COURT ROAD

Fair

Over: IS 695

0.38 MI S OF IS 795, Baltimore, MD

Built 1983 Load: 48.5 t ADT: 15,090

MD 151 EBR

Fair

Over: MERRITT BOULEVARD

0.21 MI N OF MD 695, Baltimore, MD

Built 1968 Load: 48.5 t ADT: 30,031

COVE ROAD

Fair

Over: NORFOLK SOUTHERN RR

500 N. OF MD 695, Baltimore, MD

Built 1971 Load: 48.5 t ADT: 5,699

MD 32 WB

Fair

Over: CSX TRANSPORTATION

ON ANNE ARUNDEL CO LINE, Howard, MD

Built 1983 Load: 48.5 t ADT: 65,902

US 1 ALT NB

Fair

Over: NORTHEAST BRANCH

0.45 MILE NORTH OF MD 450, Prince George's, MD

Built 1955 Load: 48.5 t ADT: 13,462

IS 70 WB

Fair

Over: MD 66

2.59 MILES EAST OF US 40, Washington, MD

Built 1966 Load: 48.5 t ADT: 58,600

MCDONOGH ROAD

Fair

Over: SCOTTS LEVEL BRANCH

0.5 MI N OF MD RTE 26, Baltimore, MD

Built 1993 Load: 48.5 t ADT: 4,750

FALLSWAY

Fair

Over: I-83 & JAIL PARKING LOTS

0.03 MI S OF BIDDLE ST, Baltimore city, MD

Built 1968 Load: 48.5 t ADT: 8,404

BRANGELS ROAD

Fair

Over: PINEY RUN

0.55 MI E OF ARRINGTON RD, Carroll, MD

Built 1974 Load: 48.5 t ADT: 3,125

CHESACO AVENUE

Fair

Over: I-95

Milepost M61.7, Baltimore, MD

Built 1996 Load: 48.5 t ADT: 12,525

Showing 2,151-2,200 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.