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

I-83

Fair

Over: ON-RAMP TO NB I-83 FROM

I-83 OVER RAMP FROM N AVE, Baltimore city, MD

Built 1959 Load: 62.6 t ADT: 4,726

TRAPPE CHURCH ROAD

Fair

Over: HOPKINS BRANCH

1.0 MILES E OF MD 136, Harford, MD

Built 1978 Load: 62.6 t ADT: 441

WEST OLD BALTIMORE

Fair

Over: LITTLE SENECA CREEK

1.0 MILES WEST OF MD 355, Montgomery, MD

Built 1934 Load: 62.6 t ADT: 1,069

BRANCHVILLE ROAD

Fair

Over: INDIAN CREEK

0.16 MI NW OF MD 193, Prince George's, MD

Built 1969 Load: 62.6 t ADT: 1,856

PEGG ROAD

Fair

Over: BRANCH JARBOESVILLE RUN

0.9 MI SOUTHWEST RT.235, St. Mary's, MD

Built 1995 Load: 62.6 t ADT: 4,891

I-95

Fair

Over: STREAM

Milepost M98.6, Cecil, MD

Built 1963 Load: 62.6 t ADT: 89,058

GREEN SPRING ROAD

Fair

Over: C&O CANAL

0.4 miles from MD Route 5, Allegany, MD

Built 1971 Load: 62.6 t ADT: 100

BW PARKWAY

Fair

Over: MD ROUTE 202

0.8 MILES NORTH OF MD ROU, Prince George's, MD

Built 1953 Load: 62.6 t ADT: 80,000

SUITLAND PARKWAY

Fair

Over: ANDREWS AFB ACCESS ROAD

0.1 MILES WEST OF MD ROUT, Prince George's, MD

Built 1944 Load: 62.6 t ADT: 16,750

IS 795 RAMP B

Fair

Over: GWYNNS FALLS

@ IS 795 & IS 695, Baltimore, MD

Built 1984 Load: 63.0 t ADT: 23,650

MD 695

Fair

Over: MD 151

I-695 AT MD 151, Baltimore, MD

Built 1995 Load: 63.0 t ADT: 21,732

MD 404 EB

Fair

Over: MARKET STREET

0.46 MI W OF MD 404 BU, Caroline, MD

Built 1987 Load: 63.0 t ADT: 15,421

MD 404 WB

Fair

Over: MARKET STREET

0.46 MI W OF MD 404 BU, Caroline, MD

Built 1987 Load: 63.0 t ADT: 15,421

MD 26

Fair

Over: MD 97

1.52 MILE EAST OF MD 26A, Carroll, MD

Built 1962 Load: 63.0 t ADT: 25,970

MD 32 EB

Fair

Over: GUILFORD ROAD

1.0 MILE NORTH OF IS 95, Howard, MD

Built 1980 Load: 63.0 t ADT: 91,311

SENECA DRIVE

Fair

Over: US 29 AND RAMP I(7)

0.65 MILE NORTH OF MD 32, Howard, MD

Built 1993 Load: 63.0 t ADT: 5,031

IS 81 NB

Fair

Over: MAUGANSVILLE ROAD

0.38 MILE NORTH OF MD 58, Washington, MD

Built 1958 Load: 63.0 t ADT: 63,000

ON-RAMP NORTHERN P

Fair

Over: JONES FALLS

NORTHRN PKWY RAMP TO I-83, Baltimore city, MD

Built 1959 Load: 63.0 t ADT: 29,900

THURSTON ROAD

Fair

Over: BENNETT CREEK

0.75 MI S OF PETERS RD, Frederick, MD

Built 1964 Load: 63.0 t ADT: 1,632

FOXVLLE DEERFIELD

Fair

Over: OWENS CREEK

0.25 MI NW OF MD 550, Frederick, MD

Built 1978 Load: 63.0 t ADT: 561

WHITE HOUSE ROAD

Fair

Over: SOUTHWEST BRANCH

0.04 MI S OF MD 202, Prince George's, MD

Built 1967 Load: 63.0 t ADT: 13,443

IS 795 SBR

Fair

Over: CSX TRANSPORTATION

0.71 MILE NORTH OF IS 695, Baltimore, MD

Built 1983 Load: 63.5 t ADT: 110,982

IS 70 WBR

Fair

Over: IS 70 RAMP E

0.28 MILE WEST OF US 40AL, Frederick, MD

Built 1969 Load: 63.5 t ADT: 68,800

US 15 NBR

Fair

Over: LITTLE OWENS CREEK

1.74 MILE NORTH OF MD 550, Frederick, MD

Built 1982 Load: 63.5 t ADT: 27,210

COMUS ROAD

Fair

Over: IS 270

1.3 MI N OF MD 121, Montgomery, MD

Built 1952 Load: 63.5 t ADT: 2,540

MD 109

Fair

Over: LITTLE BENNETT CREEK

UNDER IS 270 OVERPASS, Montgomery, MD

Built 1951 Load: 63.5 t ADT: 7,232

MD 210

Fair

Over: IS 95/IS 495

0.13 MILE NORTH OF MD 414, Prince George's, MD

Built 2007 Load: 63.5 t ADT: 28,550

MD 363

Fair

Over: UPPER THOROFARE

0.36 MILE E OF HOTEL RD, Somerset, MD

Built 1987 Load: 63.5 t ADT: 1,322

MD 144WB

Fair

Over: LITTLE TONOLOWAY CREEK

0.01 MILE WEST OF US 522, Washington, MD

Built 1925 Load: 63.5 t ADT: 4,051

US 522

Fair

Over: IS 70 EBR RAMP A

.545 MILE NORTH OF MD 894, Washington, MD

Built 1965 Load: 63.5 t ADT: 8,230

COWPENS AVENUE

Fair

Over: MINEBANK RUN

0.11 M N OF CROMWEL BR RD, Baltimore, MD

Built 1968 Load: 63.5 t ADT: 7,165

FORT AVENUE

Fair

Over: KEY HIGHWAY

FORT AVE OVER KEY HWY, Baltimore city, MD

Built 1930 Load: 63.5 t ADT: 12,887

S. CARROLL STREET

Fair

Over: CARROLL CREEK

470 SOUTH OF SR 144, Frederick, MD

Built 1991 Load: 63.5 t ADT: 10,130

GRAFTON SHOP ROAD

Fair

Over: BEAR CABIN BRANCH

0.03 MI N OF TIMBERLEA DR, Harford, MD

Built 1977 Load: 63.5 t ADT: 2,765

LAKESIDE DRIVE

Fair

Over: TRIB. TO PATUXENT RIVER

0.2 MI W OF NICHOLS DRIV, Howard, MD

Built 1988 Load: 63.5 t ADT: 340

GOSHEN ROAD

Fair

Over: WHETSTONE RUN TRIBUTARY

.25 MI N OF MIDCOUNTY HWY, Montgomery, MD

Built 1930 Load: 63.5 t ADT: 26,801

HOPE ROE ROAD

Fair

Over: GERMAN BRANCH

0.1 MI. SW OF MOORES LN, Queen Anne's, MD

Built 1983 Load: 63.5 t ADT: 350

IS 95 NB

Fair

Over: CSX RR BERNARD DR

Milepost M51.0, Baltimore city, MD

Built 1976 Load: 63.5 t ADT: 111,060

MD 32 EBR

Fair

Over: MD 3 NBR

0.35 MILE NORTH OF IS 97, Anne Arundel, MD

Built 1989 Load: 63.9 t ADT: 39,092

IS 495 & RAMP K(4)

Fair

Over: IS 495X & C J CR

0.49 MILE WEST OF MD 190, Montgomery, MD

Built 1962 Load: 63.9 t ADT: 214,005

CHESAPEAKE CENTER

Fair

Over: BACK CREEK

0.1 MI. S. OF MD 710, Anne Arundel, MD

Built 1991 Load: 63.9 t ADT: 10,047

I-83 NB OFF-RAMP

Fair

Over: 28TH ST AND NS RAILROAD

0.4 MI N OF NORTH AVE, Baltimore city, MD

Built 1959 Load: 63.9 t ADT: 31,200

OLDFIELD POINT RD

Fair

Over: PLUM CREEK

2.5 + S OF ELKTON, Cecil, MD

Built 1986 Load: 63.9 t ADT: 9,301

OLD TELEGRAPH RD

Fair

Over: SANDY BRANCH

0.35 MI S OF BUNKER HI RD, Cecil, MD

Built 2000 Load: 63.9 t ADT: 948

MADONNA ROAD

Fair

Over: LITTLE DEER CREEK

0.3 MILE S OF MT HOREB RD, Harford, MD

Built 1992 Load: 63.9 t ADT: 789

WILDCAT ROAD

Fair

Over: WILDCAT BRANCH

2.4 MI SW OF MD 124, Montgomery, MD

Built 1935 Load: 63.9 t ADT: 431

MD 213

Fair

Over: GRAVEL RUN

0.22 MILE SOUTH OF MD 305, Queen Anne's, MD

Built 1932 Load: 64.2 t ADT: 11,625

IS 97 NBR

Fair

Over: MD 997D

0.09 MI N OF MD 3, Anne Arundel, MD

Built 1989 Load: 64.4 t ADT: 102,300

IS 695 RAMP A

Fair

Over: HERBERT RUN

RP 3 TO LEEDS AVE, Baltimore, MD

Built 1957 Load: 64.4 t ADT: 4,779

MD 43 EBR

Fair

Over: IS 695 OL

0.97 MILE WEST OF US 1, Baltimore, MD

Built 1989 Load: 64.4 t ADT: 35,082

Showing 2,801-2,850 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.