Howard County, MD
310 public highway bridges
Howard County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Howard County, Maryland contains 310 public highway bridges. Roughly 28.4% are rated “Good,” 37.1% “Fair,” and 5.8% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Condition Distribution
All Bridges (310)
ROGERS AVE
UnknownOver: IS 70
0.76 MILE EAST OF US 29, Howard, MD
US 29 NBR
UnknownOver: US 29 RAMP 'A' (07)
0.28 MI S OF US 40, Howard, MD
US 29 NBR
UnknownOver: FREDERICK ROAD
0.55 MI S OF US 40, Howard, MD
US 29 SBR
UnknownOver: FREDERICK ROAD
0.55 MI S OF US 40, Howard, MD
US 29 NBR
UnknownOver: US 40
0.28 M W OF RIDGE ROAD, Howard, MD
US 29 SBR
UnknownOver: US 40
0.28 M W OF RIDGE ROAD, Howard, MD
RIDGE ROAD
UnknownOver: US 29 RAMP 'H' (4)
@ US 29, Howard, MD
IS 70 EBR
UnknownOver: IS 70 RAMP 'G'(7)
0.23 MILE EAST OF US 29, Howard, MD
US 29 NBR
UnknownOver: IS 70 RAMP 'G'(7)
0.67 MI S OF MD 99, Howard, MD
IS 70 EBR
UnknownOver: MD 97
.45 MILE NORTH OF MD 144A, Howard, MD
IS 70 WBR
UnknownOver: MD 97
.45 MILE NORTH OF MD 144A, Howard, MD
IS 70 EBR
UnknownOver: MD 32
0.82 MILE SOUTH OF MD 99, Howard, MD
IS 70 WBR
UnknownOver: MD 32
0.82 MILE SOUTH OF MD 99, Howard, MD
US 40 SB RAMP
UnknownOver: US 40 EBR
0.13 MILE EAST OF US 29, Howard, MD
US 40
UnknownOver: PATAPSCO FOREST ROAD
0.52 MI W OF BALTIMORE CO, Howard, MD
ST JOHNS LANE
UnknownOver: IS 70
0.8 MI W OF US 29, Howard, MD
TRIDELPHIA ROAD
UnknownOver: MD 32
0.36 M S OF TEN OAKS ROAD, Howard, MD
US 29 NBR
UnknownOver: IS 70
0.23 M W OF BR NO 1302000, Howard, MD
US 29 SBR
UnknownOver: IS 70
0.44 MI S OF MD 99, Howard, MD
MD 100 EBR
UnknownOver: IS 95
0.5 MILE NORTH OF MD 103, Howard, MD
MD 100 WBR
UnknownOver: IS 95
0.5 MILE NORTH OF MD 103, Howard, MD
IS 95 NB
UnknownOver: MD 103
0.71 MILE NORTH OF US I, Howard, MD
IS 95 SB
UnknownOver: MD 103
0.71 MILE NORTH OF US I, Howard, MD
MONTGOMERY ROAD
UnknownOver: IS 95
1.07 MILE SOUTH OF IS 895, Howard, MD
BETHANY LANE
UnknownOver: IS 70
1.61 MILE WEST OF US 29, Howard, MD
MARRIOTTSVILLE RD
UnknownOver: IS 70
0.82 MILE EAST OF US 40, Howard, MD
US 40 WBR
UnknownOver: IS 70
US 40 @ IS 70, Howard, MD
MD 100 RAMP 'A'
UnknownOver: IS 95
0.16 MILE NORTH OF MD 100, Howard, MD
MD 100 EBR
UnknownOver: MD 100 RAMP 'A'
0.92 MILE WEST OF US 1, Howard, MD
MD 100 WBR
UnknownOver: MD 100 RAMP 'A'
0.92 MILE WEST OF US 1, Howard, MD
MD 175 EB
UnknownOver: IS 95
1.38 M S OF MD 103, Howard, MD
MD 175 WB
UnknownOver: IS 95
1.28 M S OF MD 103, Howard, MD
MD 32 RAMP 'B'(2)
UnknownOver: GUILDFORD ROAD
1.30 MILES N OF IS 95I, Howard, MD
IS 95 NBR
UnknownOver: GUILDFORD ROAD
1.30 MILES N OF IS 95, Howard, MD
GUILFORD ROAD
UnknownOver: IS 95 SBR
1.74 MILES N OF US 1, Howard, MD
IS 95 NBR
UnknownOver: MD 32 WBR
0.68 M N/VOLLMERHAUSEN RD, Howard, MD
MD 32 WBR
UnknownOver: IS 95 SBR
0.14 M S OF GUILFORD ROAD, Howard, MD
IS 95 NBR
UnknownOver: MD 32 EBR
1.74 MILES NORTH OF US 1, Howard, MD
MD 32 EBR
UnknownOver: IS 95 SBR
0.14 MILE SOUTH OF MD 32, Howard, MD
VOLLMERHAUSEN RD
UnknownOver: IS 95 SBR
0.71 MILE SOUTH OF MD 32, Howard, MD
GORMAN ROAD
UnknownOver: IS 95
0.96 MILE NORTH OF MD 216, Howard, MD
MD 216 EBR
UnknownOver: IS 95
1.16 MILES N OF PG CO, Howard, MD
MD 216 WBR
UnknownOver: IS 95
1.16 MILES N OF PG CO, Howard, MD
VOLLMERHAUSEN ROAD
UnknownOver: MD32
0.9 MILE NORTH OF US 1, Howard, MD
SAND HILL ROAD
UnknownOver: IS 70
1.19 MILE EAST OF MD 32, Howard, MD
MORGAN STATION RD
UnknownOver: IS 70
1.9 MILE WEST OF MD 97, Howard, MD
WATERSVILLE ROAD
UnknownOver: IS 70
2.54 M E OF CARROLL CO/L, Howard, MD
W WATERSVILLE ROAD
UnknownOver: IS 70
1.01 M E OF CARROLL CO/L, Howard, MD
MD 175 EBR
UnknownOver: US 29
1.11 M S OF MD 108, Howard, MD
MD 175 WBR
UnknownOver: US 29
1.11 M S OF MD 108, Howard, MD
Read our methodology - how this data is sourced, computed, and verified.
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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.