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: LITTLE CATOCTIN CREEK
AT HARMONY RD INT, Frederick, MD
Over: MIDDLE PATUXENT RIVER
0.1 MI S VOLLMERHAUSEN RD, Howard, MD
Over: LITTLE PATUXENT RIVER
0.1 MI E OF US 29, Howard, MD
Over: LITTLE TONOLOWAY CREEK
0.76 MI. W OF US 40, Washington, MD
Over: POTOMAC RIVER
ON VIRGINIA LINE, Charles, MD
Over: CSX RAILROAD
0.3 MI NW PULASKI HWY, Baltimore, MD
Over: HERRING RUN
0.25 MI S ARGONNE DRIVE, Baltimore city, MD
Over: TUCKAHOE CREEK
ON QUEEN ANNES CO LINE, Caroline, MD
Over: BIG PIPE CREEK
0.64 MILE NORTH OF MD 77, Carroll, MD
Over: MURPHY RUN
0.3 MILES EAST OF MD 30, Carroll, MD
Over: SAMS CREEK
0.45 MI E OF MD RTE 31, Frederick, MD
Over: TRIBUTARY TO HA HA BRANC
0.03 MILES W OF MD 7, Harford, MD
Over: LITTLE PATUXENT RIVER
0.08 MILE WEST OF US 29, Howard, MD
Over: UNNAMED STREAM
400' N OF HOMEWOOD RD, Howard, MD
Over: Northwest Branch
1.40 Mi West of MD650, Montgomery, MD
Over: CSX RAILROAD
0.1 MILES N. OF RIVERTECH, Prince George's, MD
Over: BURCH BRANCH
.2 MI S OF FLORAL PARK RD, Prince George's, MD
Over: TRIB TO WHITEMARSH RUN
RAMP TO MD 7, Baltimore, MD
Over: GOODWIN RUN
0.3 MI W OF MD RTE 45, Baltimore, MD
Over: MTA LIGHT RAIL, MARC, &
0.8 MI. N. OF I 95, Baltimore city, MD
Over: TUCKAHOE CREEK
ON TALBOT CO LINE, Caroline, MD
Over: SAMS CREEK
ON FREDERICK CO LINE, Carroll, MD
Over: GILLIS FALLS
0.09 MI N OF HOWARD CO, Carroll, MD
Over: STORMWATER CHANNEL RELIE
2.27 MI. SOUTH OF I-70, Frederick, MD
Over: OTTERS POINT CREEK
0.1 MILE NORTH OF US 40, Harford, MD
Over: BR OF WEST BRANCH
0.97 MILE NORTH OF MD 152, Harford, MD
Over: DEEP RUN
0.7 MILES S OF MD 623, Harford, MD
Over: LITTLE PATUXENT RIVER
0.31 MI S OF US 29, Howard, MD
Over: BATCHELLORS RUN
0.65 MILE WEST OF MD 182, Montgomery, MD
Over: BR OF LITTLE MONOCACY RI
1.74 M S OFCOMUS ROAD, Montgomery, MD
Over: CENTURY BOULEVARD
0.2 MI SW OF JCT I-270, Montgomery, MD
Over: CENTURY BOULEVARD
0.2 MI SW OF JCT I-270, Montgomery, MD
Over: MD 200 (ICC),US29, Rp SE
MD200EB Ramp EN to US29NB, Montgomery, MD
Over: MCINTOSH RUN
0.9 MI N OF MD RTE 245, St. Mary's, MD
Over: ANTIETAM CREEK
1.2 MI W OF MD RTE 62, Washington, MD
Over: SOUTH BR GUNPOWDER FALLS
0.97 MI S OF PA LINE, Carroll, MD
Over: MD 85 (Buckeystown Pike)
1.0 N OF BR NO 1007400, Frederick, MD
Over: BR OF MIDDLE PATUXENT RI
1.5 MI N OF BURNTWOODS RD, Howard, MD
Over: MD 210 NORTHBOUND
1.6 MI. S. OF IS 495, Prince George's, MD
Over: POTOMAC RIVER
ON WEST VIRGINIA LINE, Washington, MD
Over: POTOMAC RIVER
ON WEST VIRGINIA LINE, Washington, MD
Over: NEFF RUN
AT CHURCH STREET, Allegany, MD
Over: LITTLE PATUXENT RIVER
1.0 MILE SOUTH OF MD 32, Anne Arundel, MD
Over: TRIBUTARY TO GWYNNS FALL
1.3 MI E OF IS 695, Baltimore, MD
Over: CONRAIL YARDS
Milepost M56.7, Baltimore city, MD
Over: BEAR BRANCH
2.2 MI W OF MAYBERRY RD, Carroll, MD
Over: CARROLL CREEK
0.21 M E OF MARYLAND AVE, Frederick, MD
Over: DOUBS BRANCH
100' EAST OF BALLENGER CR, Frederick, MD
Over: CSX TRANS.
0.34 MILE SOUTH OF US 40, Harford, MD
Over: BYNUM RUN
0.05 MI N OF SPENCEOLA PK, Harford, MD
Showing 4,351-4,400 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 |