Total Bridges
5,527
Public highway bridges in Maryland
State profile · Below national median SD
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Maryland — drawn straight from the FHWA National Bridge Inventory.
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%
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
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
47
24
08
41
Six lowest-condition bridges in Maryland, ranked by composite NBI rating. Each is inspected at least every 24 months.
Over: BEAR CREEK
0.01 MI N OF WALNUT ST, Garrett, MD
Over: HAWLINGS RIVER
2.8 MILES NORTH OF MD 108, Montgomery, MD
Over: BEAVER CREEK
0.1 MI W OF ALT US RTE 40, Washington, MD
Over: WATERSPOUT RUN
2.63 MI. WEST MD 25, Baltimore, MD
Over: CSX RAILROAD
0.1 MI NW OF US RTE 40, Baltimore, MD
Over: LITTLE PATUXENT RIVER
0.5 MI W OF US RTE 29, Howard, MD
Over: STONY BRANCH
1.7 MILES NORTH OF MD 76, Frederick, MD
Over: GRINDSTONE RUN
AT MONUMENT RD INTERSECTN, Frederick, MD
Over: ANDOVER BRANCH
2.8 MI. NE JCT MD 300, Queen Anne's, MD
Over: Warehouse Road and Trade
0.4 Mi. S. of MD 158, Baltimore, MD
Over: BOOZE CREEK
40 FT E OF FALLEN OAK RD, Montgomery, MD
Over: PATAPSCO RIVER
PATAPSCO VALLEY ST PARK, Baltimore, MD
Over: TRIB / BROAD CREEK
0.31 MI SW OF MD 136, Harford, MD
Over: GASHEYS CREEK
0.8 MILES S OF MD 132, Harford, MD
Over: GEORGES RUN
1.36 MI N OF MD 137, Baltimore, MD
Over: HAWLINGS RIVER
0.4 MILES WEST OF MD 650, Montgomery, MD
Over: BIG PIPE CREEK
3.52 MILEI WEST OF MD 30, Carroll, MD
Over: SOUTH BR PATAPSCO RIVER
ON HOWARD COUNTY LINE, Carroll, MD
Over: BR OF THORNE GUT
5.35 MILES NORTH OF MD 6, Charles, MD
Over: THORNE GUT
4.54 MILES NORTH OF MD 6, Charles, MD
Over: TRIB OF PETER PAN RUN
S OF BUSH CREEK DRIVE, Frederick, MD
Over: GRINDSTONE RUN
1.55 MI WEST OF MD 17, Frederick, MD
Over: BONNIE BRANCH
0.2 MI E OF COLLEGE AVE, Howard, MD
Over: ROCK CREEK
1 MILE NORTH OF MD 115, Montgomery, MD
Over: W B & A TRAIL
.3 MI NE OF BOWIE R TRACK, Prince George's, MD
Over: MINEBANK RUN
0.3 MI. NW CROMWELL BR RD, Baltimore, MD
Over: WINTERS RUN
1.4 MILES N OF MD 152, Harford, MD
Over: RAMP TO I-270
0.1 MI W OF I-270, Montgomery, MD
Over: TRIBUTARY TO MARLEY CREE
0.80 MI S OF MD 100, Anne Arundel, MD
Over: BLACKROCK RUN
0.3 MI E OF MD 25, Baltimore, MD
Over: TRIBUTARY TO GWYNNS FALL
0.06 MI S OF GWYNBRK AVE, Baltimore, MD
Over: I-95 Ramps E & F
3.2 MI N OF I-695/I-95INT, Baltimore, MD
Over: AMTRAK RAILROAD
0.16 MI N OF MD RTE 150, Baltimore, MD
Over: MIDDLE CREEK
0.02 M S OF SPRUCE RUN RD, Frederick, MD
Over: CARROLL CREEK
JUST S. OF SOUTH STREET, Frederick, MD
Over: LITTLE ANNEMESSEX RIVER
0.2 MILES WEST OF MD 358, Somerset, MD
Over: SWAN CREEK
0.6 MILES S OF MD 156, Harford, MD
Over: HOURLY PARKING GARAGE
BWI HOURLY PARK GARAGE, Anne Arundel, MD
Over: EBAUGHS CREEK
0.15 MI N OF BOND ROAD, Baltimore, MD
Over: WEST BRANCH and WINTERS
0.01 MI E OF CHARLES ST, Harford, MD
Over: CSX TRANSPORTATION
ON ANNE ARUNDEL CO LINE, Howard, MD
Over: MOORES RUN ROAD
0.30 MILE NORTH OF MD 935, Allegany, MD
Over: CANINE ROAD
ENTRANCE TO N.S.A., Anne Arundel, MD
Over: HOURLY PARKING GARAGE
BWI HOURLY PARK GARAGE, Anne Arundel, MD
Over: HOURLY PARKING GARAGE
BWI AIRPORT PARK GARAGE, Anne Arundel, MD
Over: STONE RUN
0.91 MI N OF US 1, Cecil, MD
Over: HAWLINGS RIVER
2.0 MILES EAST OF MD 108, Montgomery, MD
Over: LITTLE CATOCTIN CREEK
0.25 MI EAST OF MD RTE 17, Frederick, MD
Over: LITTLE PATUXENT RIVER
0.23 M S OF SHAKER DRIVE, Howard, MD
Over: CRICKETT CREEK
1.0 Mile SE of MD 108, Howard, MD
Over: UNICORN BRANCH
0.8 MI. E. OF MD313, Queen Anne's, MD
Over: GEORGES CREEK
0.13 MI W OF MD 936, Allegany, MD
Over: LEEDS AVE & HERBERT RUN
0.77 MILE NORTH OF IS 95, Baltimore, MD
Over: ISRAEL CREEK
1 MI E OF MD RTE 194, Frederick, MD
Over: UNNAMED STREAM
400 FT NW OF ROGERS AVE, Howard, MD
Over: BENNETT CREEK TRIBUTARY
0.2 MI W BETHESDA CH RD, Montgomery, MD
Showing 4,901-4,950 of 5,527 bridges
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.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |