Total Bridges
5,527
Public highway bridges in Maryland
State profile · Below median Poor share
Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Maryland, based on the FHWA National Bridge Inventory.
Data updated May 2026
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 whose lowest applicable component is rated 0-4
-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 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.
CT
TN
MD
CO
OR
Six lowest-condition bridges in Maryland, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.