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: LANES RUN
0.9 MI N OF US RTE 40, Washington, MD
Over: BIG HUNTING CREEK
WEST OF LAYMAN RD INT, Frederick, MD
Over: DEER CREEK
0.02 MILES NE OF MD 24, Harford, MD
Over: BEAVER CREEK
0.36 MI N OF MD RTE 64, Washington, MD
Over: LITTLE ANTIETAM CREEK
0.5 MI W OF MD RTE 67, Washington, MD
Over: CABIN JOHN CREEK
1.5 MI. E. OF I-495, Montgomery, MD
Over: OCTORARO CREEK
0.02 MI W OF HORSESHOE RD, Cecil, MD
Over: NYDEGGER RUN
0.32 MI NORTH OF MD 560, Garrett, MD
Over: LITTLE TONOLOWAY CREEK
0.16 MI N MD RT 144, Washington, MD
Over: ROCK BRANCH
0.7 MI N OF MD RTE 422, Anne Arundel, MD
Over: CATOCTIN CREEK
0.65 MI EAST OF MD 17, Frederick, MD
Over: TRIBUTARY OF OREGON BRAN
0.7 MI E OF FALLS RD, Baltimore, MD
Over: TRIBUTARY TO PATAPSCO RI
0.57 MI S OF MD 144, Baltimore, MD
Over: MINEBANK RUN
0.09 MI W CROMWELL BRDG R, Baltimore city, MD
Over: TOMS CREEK
2.0 MI NORTHEAST OF MD 76, Frederick, MD
Over: WEST BRANCH/WINTERS RUN
1.5 MILES E OF MD 165, Harford, MD
Over: KILGOUR BRANCH
1.5 MI WEST OF MD 189, Montgomery, MD
Over: ANTIETAM CREEK
0.8 MI NW OF MD RTE 34, Washington, MD
Over: LITTLE ANTIETAM CREEK
1.89 MI W OF MD RTE 67, Washington, MD
Over: DEER CREEK
1.6 MILES S OF US 1, Harford, MD
Over: SEVERN RUN
0.64 MI E OF MD 174, Anne Arundel, MD
Over: BASIN RUN
0.01 MI NE OF DR JACK RD, Cecil, MD
Over: CABBAGE RUN
1.39 MILES NORTH OF MD 26, Frederick, MD
Over: HUNTING CREEK
WEST OF OLD FREDERICK RD, Frederick, MD
Over: CATTAIL BRANCH
0.04 MI S GREEN LEAF RD, Prince George's, MD
Over: POTOMAC RIVER, CSX TRANS
ON VIRGINIA STATE LINE, Washington, MD
Over: WESTERN RUN
0.3 MI S WESTERN RUN RD, Baltimore, MD
Over: TRIBUTARY TO PATAPSCO RI
0.08 MI W OF HMDS FERY RD, Baltimore, MD
Over: TRIBUTARY TO PATUXENT RI
0.17 MILES EAST OF US 1, Prince George's, MD
Over: ANTIETAM STREET
1000 FT W OF US RTE 40 E, Washington, MD
Over: C&O CANAL
0.1 miles from Spring Gap, Allegany, MD
Over: GRANITE BRANCH
0.46 MI N OF DAVIS AVE, Baltimore, MD
Over: BASIN RUN
0.03 MI N OF BASIN RUN RD, Cecil, MD
Over: HOLLOW CREEK
1 MILE SOUTHEAST OF MD 17, Frederick, MD
Over: BLUE BLAZES CREEK
US-15N, WEST ON MC-77 TO, Frederick, MD
Over: UNNAMED STREAM
0.40 MI NE OF MD 36, Allegany, MD
Over: SAW MILL BRANCH
0.04 MILES N OF GREENE RD, Harford, MD
Over: WESTERN BRANCH
0.13 MILE NORTH OF MD 4, Prince George's, MD
Over: PATUXENT RIVER
TRACT #9 / CENTRAL TRACT, Anne Arundel, MD
Over: CABIN BRANCH
0.29 MI W OF MD 10, Anne Arundel, MD
Over: LITTLE PATUXENT RIVER
0.8 MILES SOUTH OF MD ROU, Anne Arundel, MD
Over: LITTLE PATUXENT RIVER
0.8 MILES SOUTH OF MD ROU, Anne Arundel, MD
Over: TRIBUTARY TO NORTH BRANC
1.28 MILES NW OF MD 30, Baltimore, MD
Over: MIDDLE CREEK
AT MD 17 INTERSECTION, Frederick, MD
Over: CATOCTIN CREEK
1.5 MI W OLD MIDDLETOWN R, Frederick, MD
Over: LITTLE YOUGHIOGHENY RIVE
0.6 M N INT GARRETT RD, Garrett, MD
Over: WINTERS RUN
1.8 MILES W OF US 1, Harford, MD
Over: DEER CREEK
0.02 MI S OF TELEGRAPH RD, Harford, MD
Over: TRIB TO SOUTHWEST BRANCH
.1 MI N OF WHITE HOUSE RD, Prince George's, MD
Over: TRIB. TO SOUTHWEST BR.
0.8 MI SOUTH OF MD 214, Prince George's, MD
Showing 1,151-1,200 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 |