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 299

Fair

Over: SASSAFRAS RIVER

ON CECIL COUNTY LINE, Kent, MD

Built 1932 Load: 54.4 t ADT: 1,022

IS 95X RAMP D

Fair

Over: IS 495 IL TRIB PAINT BR

0.28 M N OF PARK AND RIDE, Prince George's, MD

Built 1967 Load: 54.4 t ADT: 346

US 13 SB

Fair

Over: NORFOLK SOUTHERN RR

0.40 MILE NORTH OF MD 364, Somerset, MD

Built 1965 Load: 54.4 t ADT: 16,470

US 40

Fair

Over: HAMILTON RUN

0.27 MILE EAST OF MD 64, Washington, MD

Built 1941 Load: 54.4 t ADT: 35,842

GREENSPRING AVENUE

Fair

Over: JONES FALLS

0.1 MI N HILLSIDE RD, Baltimore, MD

Built 1975 Load: 54.4 t ADT: 5,142

SUDBROOK LANE

Fair

Over: CSX RAILROAD

0.6 MI S REISTERSTOWN RD, Baltimore, MD

Built 1907 Load: 54.4 t ADT: 2,972

RED RUN BOULEVARD

Fair

Over: RED RUN

0.64 MI E OF MD 940, Baltimore, MD

Built 1985 Load: 54.4 t ADT: 18,272

I-83 SB RAMP E

Fair

Over: CENTRE STREET

SB JFX OFF-RAMP OV CENTRE, Baltimore city, MD

Built 1976 Load: 54.4 t ADT: 3,699

HILTON PARKWAY

Fair

Over: GWYNNS FALLS & FRANKLIN

0.6 MI N EDMONDSON AVE, Baltimore city, MD

Built 1938 Load: 54.4 t ADT: 10,664

LOCHLEA ROAD

Fair

Over: WESTERN RUN

INTER WITH SMITH AVE, Baltimore city, MD

Built 1964 Load: 54.4 t ADT: 634

MCCOMAS STREET

Fair

Over: CSX

0.6 M. E. OF HANOVER ST, Baltimore city, MD

Built 1981 Load: 54.4 t ADT: 1,979

INDIANTOWN ROAD

Fair

Over: CHICONE CREEK

1 MI NE OF MD 331, Dorchester, MD

Built 1993 Load: 54.4 t ADT: 303

TIMMONS ROAD

Fair

Over: LINGANORE CREEK

AT GLISSANS MILL RD INT, Frederick, MD

Built 1974 Load: 54.4 t ADT: 276

WOOTTON PARKWAY

Fair

Over: TRIB CABIN JOHN CREEK

1.1 MILES WEST OF MD 355, Montgomery, MD

Built 1991 Load: 54.4 t ADT: 22,236

NO. 10 SCHOOL ROAD

Fair

Over: ANDOVER BRANCH

0.5 MI FROM MD RTE 291, Queen Anne's, MD

Built 2006 Load: 54.4 t ADT: 169

IS 95 SB

Fair

Over: CSX RR YARD & BERNARD DR

Milepost M51.0, Baltimore city, MD

Built 1976 Load: 54.4 t ADT: 108,194

MD 695

Fair

Over: IS 895B

0.5 MI N OF MD 2, Anne Arundel, MD

Built 1957 Load: 54.9 t ADT: 92,102

MD 32 EBR

Fair

Over: MD 3 SBR

0.35 MILE NORTH OF IS 97, Anne Arundel, MD

Built 1989 Load: 54.9 t ADT: 39,092

MD 3 NB

Fair

Over: IS 97

0.25 M N OF BR NO 0209600, Anne Arundel, MD

Built 1989 Load: 54.9 t ADT: 52,720

MD 852H

Fair

Over: WEST BRANCH PATAPSCO RIV

0.02 MILE WEST OF MD 852G, Carroll, MD

Built 1911 Load: 54.9 t ADT: 999

IS 495 RAMP

Fair

Over: CLARA BARTON PKWY WBR

0.55 MI W OF MD 191, Montgomery, MD

Built 1963 Load: 54.9 t ADT: 7,000

IS 81 SB

Fair

Over: CSX TRANS.

1.28 MILES NORTH OF IS 70, Washington, MD

Built 1964 Load: 54.9 t ADT: 37,409

US 40 EB

Fair

Over: IS 70 WBR

2.72 M W OF BIG POOL ROAD, Washington, MD

Built 1965 Load: 54.9 t ADT: 1,182

CORBETT ROAD

Fair

Over: TRIBUTARY TO GUNPOWDER F

0.60 MI E OF RAILROAD AVE, Baltimore, MD

Built 1926 Load: 54.9 t ADT: 400

PAINTERS MILL ROAD

Fair

Over: RED RUN

0.15 MI S OF I-795, Baltimore, MD

Built 1984 Load: 54.9 t ADT: 49,918

DR JACK ROAD

Fair

Over: ABANDONED RAILROAD

0.12 MI S OF BASIN RUN RD, Cecil, MD

Built 1981 Load: 54.9 t ADT: 1,757

ARTERS MILL ROAD

Fair

Over: BIG PIPE CREEK

1.01 MI N OF STONE ROAD, Carroll, MD

Built 1982 Load: 54.9 t ADT: 247

CRAFT ROAD

Fair

Over: HUNTING CREEK

1.2 MILES NORTH OF MD 331, Caroline, MD

Built 1996 Load: 54.9 t ADT: 630

TWINBROOK PARKWAY

Fair

Over: CSXT RR & WMATA METRO

0.24 MILES EAST OF MD 355, Montgomery, MD

Built 1964 Load: 54.9 t ADT: 39,672

IS 695 OL RAMP C

Fair

Over: IS 70 RAMPS B & F

@ I-695 & I-70 INTERCHANG, Baltimore, MD

Built 1966 Load: 55.3 t ADT: 25,300

MD 144FA

Fair

Over: IS 70

0.38 M W OF KING AVENUE, Frederick, MD

Built 1984 Load: 55.3 t ADT: 11,771

IS 70 WBR

Fair

Over: US 15

0.37 MILE EAST OF MD 180, Frederick, MD

Built 1968 Load: 55.3 t ADT: 89,580

MD 28

Fair

Over: IS 270 & C-D ROADS

0.96 MILE NORTH OF MD 189, Montgomery, MD

Built 1955 Load: 55.3 t ADT: 26,090

MD 201 NB

Fair

Over: AMTRAK SER RD BEAVERDAM

0.16 MILE SOUTH OF US 50, Prince George's, MD

Built 2008 Load: 55.3 t ADT: 132,060

IS 81 NB

Fair

Over: CSX TRANS.

1.28 MILES NORTH OF IS 70, Washington, MD

Built 1964 Load: 55.3 t ADT: 37,141

KLONDIKE ROAD

Fair

Over: GEORGES CREEK

0.16 MI NW OF MD RTE 936, Allegany, MD

Built 1991 Load: 55.3 t ADT: 783

WILKENS AVENUE

Fair

Over: AMTRAK

0.7 MI W OF CATON AVENUE, Baltimore city, MD

Built 1928 Load: 55.3 t ADT: 17,889

BLACK SNAKE ROAD

Fair

Over: LITTLE ELK CREEK

0.62 MI N OF LEEDS RD, Cecil, MD

Built 1979 Load: 55.3 t ADT: 545

TRUMAN MANOR LANE

Fair

Over: SWANSON CREEK

1 MI E GALLANT GREEN RD, Charles, MD

Built 1992 Load: 55.3 t ADT: 1,221

BASEHORES MILL RD

Fair

Over: BIG PIPE CREEK

0.02 MI NW OF UNGER RD, Carroll, MD

Built 1981 Load: 55.3 t ADT: 669

OLD FREDERICK ROAD

Fair

Over: HUNTING CREEK

1.5 MILES SOUTH OF MD 550, Frederick, MD

Built 1995 Load: 55.3 t ADT: 3,445

ACCIDENT-BEAR CREE

Fair

Over: BEAR CREEK

0.13 MI NW OF US 219, Garrett, MD

Built 1990 Load: 55.3 t ADT: 725

BARNES ROAD

Fair

Over: BEAVER CREEK

0.7 MI NW OF MD RTE 68, Washington, MD

Built 1906 Load: 55.3 t ADT: 399

GREENBELT METRO DR

Fair

Over: WATERMAIN

150 ft S. I-95 NB, Prince George's, MD

Built 1989 Load: 55.3 t ADT: 3,326

IS 595

Fair

Over: MD 70

0.11 MI W OF MD 436, Anne Arundel, MD

Built 1991 Load: 55.8 t ADT: 111,323

MD 695 RAMP F(4)

Fair

Over: CSX TRANSPORTATION

0.10 MI S OF US 40, Baltimore, MD

Built 1975 Load: 55.8 t ADT: 6,742

MCDONOGH ROAD

Fair

Over: IS 795 MTA METRO

0.06 MI W OF PURDY LA, Baltimore, MD

Built 1983 Load: 55.8 t ADT: 11,803

MD 279

Fair

Over: BRANCH OF BIG ELK CREEK

0.84 MILE NORTH OF MD 316, Cecil, MD

Built 1959 Load: 55.8 t ADT: 12,804

IS 68 EB

Fair

Over: SIDELING HILL CREEK

ON ALLEGANY CO LINE, Washington, MD

Built 1982 Load: 55.8 t ADT: 19,950

US 113 NB

Fair

Over: US 50

0.43 MILE SOUTH OF MD 818, Worcester, MD

Built 1976 Load: 55.8 t ADT: 12,902

Showing 2,501-2,550 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.