State profile · Below national median SD

Maryland bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Maryland — drawn straight from the FHWA National Bridge Inventory.

5,527
Public bridges
25.9%
Good condition
4.3%
Poor condition
4.3%
Structurally deficient

Total Bridges

5,527

Public highway bridges in Maryland

Good Condition

25.9%

1,432 bridges rated 7-9

-24.1pp vs 50% benchmark

Poor Condition

4.3%

236 bridges rated 0-4

Structurally Deficient

4.3%

236 bridges flagged for repair priority

-2.7pp vs national avg 7.0%

Maryland vs national bridge condition

Maryland — Good condition share 25.9%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Maryland — Structurally deficient share 14.2%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Maryland vs nearby ranks

Adjacent states on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Maryland on the same metric.

09

Connecticut

3.95% top marginal rate
Structure
Progressive
Burden @ $100K
$4,277

47

Tennessee

3.97% top marginal rate
Structure
Progressive
Burden @ $100K
$20,426
Selected

24

Maryland

4.27% top marginal rate
Structure
Progressive
Burden @ $100K
$5,527

08

Colorado

4.32% top marginal rate
Structure
Progressive
Burden @ $100K
$8,965

41

Oregon

4.46% top marginal rate
Structure
Progressive
Burden @ $100K
$8,310

Bridges Needing Most Attention in Maryland

Six lowest-condition bridges in Maryland, ranked by composite NBI rating. Each is inspected at least every 24 months.

All Bridges in Maryland

MD 291

Fair

Over: MILLS BRANCH

0.19 MILE WEST OF US 301, Kent, MD

Built 1934 Load: 39.5 t ADT: 2,961

BONIFANT ROAD

Fair

Over: NORTHWEST BRANCH

0.6 MILES EAST OF MD 182, Montgomery, MD

Built 1971 Load: 39.5 t ADT: 34,277

MD 234

Fair

Over: CHAPTICO CREEK

0.22 MILE WEST OF MD 238, St. Mary's, MD

Built 1959 Load: 39.5 t ADT: 8,121

US 50 WB

Fair

Over: NORTH BRANCH SKIPTON CRE

0.86 MILE EAST OF MD 662B, Talbot, MD

Built 1948 Load: 39.5 t ADT: 31,938

MD 51

Fair

Over: SAWPIT RUN

0.48 M E OF PACK HORSE RD, Allegany, MD

Built 1932 Load: 39.9 t ADT: 2,142

MD 695 RAMP 4'F'

Fair

Over: FORCE MAIN

0.19 MI E OF MD 695, Baltimore, MD

Built 1973 Load: 39.9 t ADT: 5,141

ILCHESTER ROAD

Fair

Over: PATAPSCO RIVER

1.58 MI S OF MD RTE 144, Baltimore, MD

Built 1955 Load: 39.9 t ADT: 2,052

CORBETT ROAD

Fair

Over: CARROLL BRANCH

0.29 MI E OF CARROLL ROAD, Baltimore, MD

Built 1922 Load: 39.9 t ADT: 252

OWINGS MILLS BOULE

Fair

Over: GWYNNS FALLS

1 MI N OF MD 140, Baltimore, MD

Built 1989 Load: 39.9 t ADT: 29,343

IS 95 NB

Fair

Over: MIDDLE BRANCH

0.6 MI. E. OF RUSSELL ST., Baltimore city, MD

Built 1979 Load: 39.9 t ADT: 60,992

US 40 EB OFF RAMP

Fair

Over: I-895 SB ON RAMP

MILEPOST M13.13, Baltimore city, MD

Built 1957 Load: 39.9 t ADT: 4,627

NAYLORS MILL ROAD

Fair

Over: BIG PIPE CREEK

0.41 MI N OF MD 77, Carroll, MD

Built 1947 Load: 39.9 t ADT: 24

NINER ROAD

Fair

Over: SOUTH BRANCH MIDDLE RUN

0.59 MI N OF MD 32, Carroll, MD

Built 1974 Load: 39.9 t ADT: 756

WOODVILLE ROAD

Fair

Over: SWANSON CREEK

1 MI E WILKERSON ROAD, Charles, MD

Built 1934 Load: 39.9 t ADT: 1,383

MD 806A

Fair

Over: LITTLE HUNTING CREEK

0.84 MILE NORTH OF US 15, Frederick, MD

Built 1927 Load: 39.9 t ADT: 1,072

MD 80

Fair

Over: MONOCACY RIVER

0.08 MILE EAST OF MD 880, Frederick, MD

Built 1973 Load: 39.9 t ADT: 4,472

US 15 SB

Fair

Over: FLAT RUN

0.2 MILE SOUTH OF MD 140, Frederick, MD

Built 1965 Load: 39.9 t ADT: 18,340

IS 95 NB

Fair

Over: CSX TRANSPORTATION

0.75 M N OF GUILFORD ROAD, Howard, MD

Built 1970 Load: 39.9 t ADT: 187,920

IS 95 SB

Fair

Over: CSX TRANSPORTATION

0.75 M N OF GUILFORD ROAD, Howard, MD

Built 1970 Load: 39.9 t ADT: 187,920

OLD COLUMBIA PIKE

Fair

Over: TIBER HUDSON BRANCH

0.01 MI E OF MAIN STREET, Howard, MD

Built 1997 Load: 39.9 t ADT: 5,887

COLUMBIA ROAD

Fair

Over: RED HILL BRANCH

0.4 MI N OF MD RTE 108, Howard, MD

Built 1986 Load: 39.9 t ADT: 4,946

BERRYVILLE RD

Fair

Over: SENECA CREEK TRIB

1 MI N OF JCT SR 112, Montgomery, MD

Built 1930 Load: 39.9 t ADT: 821

GREENWAY DRIVE

Fair

Over: LITTLE FALLS BRANCH

0.1 MI SOUTH OF MD 190, Montgomery, MD

Built 1962 Load: 39.9 t ADT: 886

GEORGE WASHINGTON

Fair

Over: TRIBUTARY TO NORTH BRANC

.5 MI NORTH OF MD-200, Montgomery, MD

Built 1973 Load: 39.9 t ADT: 518

BEACH DRIVE

Fair

Over: ROCK CREEK

1.3 MI SOUTH OF MD 547, Montgomery, MD

Built 1962 Load: 39.9 t ADT: 8,611

MD 410

Fair

Over: SLIGO CREEK

0.23 MILE WEST OF MD 212, Prince George's, MD

Built 1934 Load: 39.9 t ADT: 21,452

AGER ROAD

Fair

Over: NORTHWEST BRANCH

0.73 MI N OF MD 500, Prince George's, MD

Built 1961 Load: 39.9 t ADT: 18,463

GALLAHAN ROAD

Fair

Over: TINKERS CREEK

0.59 MILES NORTH OF MD 22, Prince George's, MD

Built 1989 Load: 39.9 t ADT: 4,747

GREENBELT METRO DR

Fair

Over: WMATA RAILROAD

0.2 MI S OF I-95, Prince George's, MD

Built 1989 Load: 39.9 t ADT: 1,591

IS 68 EB

Fair

Over: CREEK RD

1.0 MILE WEST OF IS 70, Washington, MD

Built 1965 Load: 39.9 t ADT: 19,000

IS 70 WB

Fair

Over: GR TONOLOWAY CK, CO RDS

0.67 MILE W OF MD 144WB, Washington, MD

Built 1965 Load: 39.9 t ADT: 39,222

MD 935

Fair

Over: MOORES RUN

0.28 MI N OF MD 36, Allegany, MD

Built 1933 Load: 40.4 t ADT: 1,430

MD 53

Fair

Over: WARRIOR RUN

0.11 MILE SOUTH OF MD 636, Allegany, MD

Built 1953 Load: 40.4 t ADT: 12,872

IS 68

Fair

Over: KELLY BLVD, CSX TRANS.

0.29 MI W OF KELLY RD, Allegany, MD

Built 1968 Load: 40.4 t ADT: 46,611

IS 595

Fair

Over: WEEMS CREEK

0.67 MI W OF MD 70, Anne Arundel, MD

Built 1953 Load: 40.4 t ADT: 123,940

MD 695 IL

Fair

Over: AMTRAK

1.12 MILE NORTH OF MD 702, Baltimore, MD

Built 1972 Load: 40.4 t ADT: 74,892

MANTUA MILL ROAD

Fair

Over: WESTERN RUN

0.1 MI S GREEN RD, Baltimore, MD

Built 1981 Load: 40.4 t ADT: 743

I-95

Fair

Over: REDHOUSE RUN

0.6 MI S OF MD 588, Baltimore, MD

Built 1960 Load: 40.4 t ADT: 168,940

LIBERTY HEIGHTS AV

Fair

Over: CSX

0.1 MI E OF LIBERTY MED C, Baltimore city, MD

Built 1916 Load: 40.4 t ADT: 32,811

I-95 RAMP O

Fair

Over: MDTA YARD, WETLANDS

RMP KEITH AVE TO I95S, Baltimore city, MD

Built 1978 Load: 40.4 t ADT: 3,828

LAUREL GROVE ROAD

Fair

Over: FAULKNER BRANCH

0.3 MILES NW OF MD 313, Caroline, MD

Built 1995 Load: 40.4 t ADT: 1,182

HAPES MILL ROAD

Fair

Over: BIG PIPE CREEK

1 MI E CROUSE MILL RD, Carroll, MD

Built 1974 Load: 40.4 t ADT: 102

PILOT TOWN ROAD

Fair

Over: CONOWINGO CREEK

0.61 MI E OF OAKWOOD RD, Cecil, MD

Built 1972 Load: 40.4 t ADT: 878

US 15 SB

Fair

Over: LITTLE OWENS CREEK

1.74 MILE NORTH OF MD 550, Frederick, MD

Built 1954 Load: 40.4 t ADT: 14,250

HEAPS ROAD

Fair

Over: BROAD CREEK

0.5 MILES NE OF MD 543, Harford, MD

Built 1979 Load: 40.4 t ADT: 529

MD 175 EB

Fair

Over: LITTLE PATUXENT RIVER

0.27 MILE NORTH OF US 29, Howard, MD

Built 1974 Load: 40.4 t ADT: 47,121

CENTENNIAL LANE

Fair

Over: CLARKS CREEK

0.3 MI N MD RTE 108, Howard, MD

Built 1987 Load: 40.4 t ADT: 9,265

IS 270

Fair

Over: GR SENECA CR & GAME PRE

1.17 MILES N OF MD 124, Montgomery, MD

Built 1954 Load: 40.4 t ADT: 154,247

RIVER ROAD

Fair

Over: SENECA CREEK

0.5 MI W OF SENECA ROAD, Montgomery, MD

Built 1959 Load: 40.4 t ADT: 3,284

MD 5 SB

Fair

Over: PISCATAWAY CREEK

2.13 MILES N OF MD 373, Prince George's, MD

Built 1956 Load: 40.4 t ADT: 38,195

Showing 2,351-2,400 of 5,527 bridges

Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.