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.

310
Total Bridges
28.4%
Good
37.1%
Fair
5.8%
Poor Condition

Condition Distribution

Good
28.4% (88)
Fair
37.1% (115)
Poor
5.8% (18)

All Bridges (310)

TURF VALLEY ROAD

Fair

Over: LITTLE PATUXENT RIVER

1/4 MI N OF US 40, Howard, MD

Built 1980 Load: 99.9 t ADT: 1,000

GOVERNOR'S RUN LAN

Fair

Over: SUCKER BRANCH

1/4 MI SOUTH OF US 40, Howard, MD

Built 1980 Load: 99.9 t ADT: 150

MARTIN ROAD

Fair

Over: TRIB TO LITTLE PATUXENT

At Quarterstaff Rd, Howard, MD

Built 1972 Load: 99.9 t ADT: 500

N. LAUREL ROAD

Fair

Over: UNNAMED STREAM

1/8 M WEST OF US 1, Howard, MD

Built 1965 Load: 99.9 t ADT: 400

RESORT ROAD

Good

Over: UNNAMED PERENNIAL STREAM

1.0 MI NORTH OF US 40, Howard, MD

Built 2019 ADT: 1,233

RESORT ROAD

Good

Over: UNNAMED INTERMITTENT STR

0.7 MI NORTH OF US 40, Howard, MD

Built 2019 ADT: 1,233

RIVER ROAD

Good

Over: TRIBUTARY TO PATAPSCO RI

0.6 MI E OF MD RTE 32, Howard, MD

Built 1975 Load: 21.8 t ADT: 1,160

MD 32 EB

Good

Over: CEDAR LANE

1.19 MILE NORTH OF US 29, Howard, MD

Built 1994 Load: 29.0 t ADT: 48,582

MD 32 WB

Good

Over: CEDAR LANE

1.19 MILE NORTH OF US 29, Howard, MD

Built 1994 Load: 29.0 t ADT: 48,582

ROVER MILL ROAD

Good

Over: MIDDLE PATUXENT RIVER

0.6 Mile E of McEndree Rd, Howard, MD

Built 1970 Load: 32.7 t ADT: 100

TOLL HOUSE ROAD

Good

Over: HUDSON BRANCH

30 FT S OF FREDERICK RD, Howard, MD

Built 1967 Load: 32.7 t ADT: 200

SWIMMER ROW WAY

Good

Over: TRIB MIDDLE PATUXENT R

200 ft East of S Trotter, Howard, MD

Built 2000 Load: 32.7 t ADT: 50

HESPERUS DRIVE

Good

Over: TRIB TO WILDE LAKE

1/4 MI SOUTH OF MD 108, Howard, MD

Built 1972 Load: 32.7 t ADT: 50

ELLICOTT WOODS LN

Good

Over: TRIB TO BONNIE BR

At Worthington Way, Howard, MD

Built 1990 Load: 32.7 t ADT: 50

THUNDER HILL ROAD

Good

Over: UNNAMED STREAM

1/8 MI S of MD 108, Howard, MD

Built 1972 Load: 32.7 t ADT: 200

OLD STOCKBRIDGE DR

Good

Over: DEEP RUN

1/8 MI W of MD 103, Howard, MD

Built 1972 Load: 32.7 t ADT: 300

COLUMBIA ROAD

Good

Over: LITTLE PATUXENT RIVER

0.5 MI N OF L. PATUX PKWY, Howard, MD

Built 1987 Load: 33.6 t ADT: 6,934

KNIGHTS BRIDGE RD

Good

Over: HAMMONDS BRANCH

0.1 MI S LOCH LEVEN CT, Howard, MD

Built 1992 Load: 35.4 t ADT: 940

GUILFORD ROAD

Good

Over: MIDDLE PATUXENT RIVER

0.04 MI N BERGER RD, Howard, MD

Built 1982 Load: 35.8 t ADT: 8,192

FOUNDRY STREET

Good

Over: LITTLE PATUXENT RIVER

0.03 MI N OF GORMAN RD, Howard, MD

Built 1975 Load: 36.7 t ADT: 5,511

MD 32

Good

Over: RIV RD,CSX,PATAPSCO RIV

ON CARROLL COUNTY LINE, Howard, MD

Built 2003 Load: 37.6 t ADT: 19,240

STEPHENS ROAD

Good

Over: HAMMOND BRANCH

0.3 M N WHISKEY BOTTOM RD, Howard, MD

Built 2021 Load: 37.6 t ADT: 3,350

TWINSTREAM DRIVE

Good

Over: TRIB TO BONNIE BR

75' W of Bonnie Branch Rd, Howard, MD

Built 2000 Load: 38.1 t ADT: 25

MD 732R

Good

Over: CSX TRANS, BROCK BRIDGE

ON ANNE ARUNDEL CO LINE, Howard, MD

Built 1990 Load: 39.0 t ADT: 15,761

WHISKEY BOTTOM RD

Good

Over: CSX RR TRACKS

ANNE ARUNDEL COUNTY LINE, Howard, MD

Built 1943 Load: 40.4 t ADT: 10,475

SANNER ROAD

Good

Over: TRIB OF MIDDLE PATUXENT

0.3 MI S PINDELL SCHOOL, Howard, MD

Built 2003 Load: 41.7 t ADT: 2,493

MURRAY HILL ROAD

Good

Over: MIDDLE PATUXENT RIVER

0.1 MI S VOLLMERHAUSEN RD, Howard, MD

Built 1988 Load: 42.6 t ADT: 3,576

STEVENS FOREST ROA

Good

Over: LITTLE PATUXENT RIVER

0.1 MI E OF US 29, Howard, MD

Built 1990 Load: 42.6 t ADT: 5,350

SOUTH ENTRANCE ROA

Good

Over: LITTLE PATUXENT RIVER

0.08 MILE WEST OF US 29, Howard, MD

Built 2004 Load: 43.1 t ADT: 4,200

CASTLEBRIDGE ROAD

Good

Over: UNNAMED STREAM

400' N OF HOMEWOOD RD, Howard, MD

Built 1995 Load: 43.1 t ADT: 50

BROKEN LAND PKWY

Good

Over: LITTLE PATUXENT RIVER

0.31 MI S OF US 29, Howard, MD

Built 1992 Load: 43.5 t ADT: 32,730

MD 32

Good

Over: BR OF MIDDLE PATUXENT RI

1.5 MI N OF BURNTWOODS RD, Howard, MD

Built 2020 Load: 43.7 t ADT: 29,475

ACCESS ROAD

Good

Over: HUDSON BRANCH

FREDERICK RD & ROGERS AVE, Howard, MD

Built 2003 Load: 44.4 t ADT: 10

MD 100

Good

Over: SNOWDEN RIVER PARKWAY

0.86 MILE WEST OF MD 103, Howard, MD

Built 1998 Load: 45.8 t ADT: 82,092

MD 100

Good

Over: SNOWDEN RIVER PARKWAY

0.86 MILE WEST OF MD 103, Howard, MD

Built 1997 Load: 45.8 t ADT: 82,092

ROGERS AVENUE

Good

Over: SUCKER BRANCH

0.4 MI N OF US RTE 40, Howard, MD

Built 1988 Load: 45.8 t ADT: 9,270

BROKEN LAND PKWY

Good

Over: LITTLE PATUXENT RIVER

0.125 MI S OF MD RTE 32, Howard, MD

Built 1986 Load: 46.7 t ADT: 21,288

Kerby Hill Rd.

Good

Over: MD 210 Service Rd.

1.5 MILE SOUTH OF I-495, Howard, MD

Built 2021 Load: 47.6 t ADT: 6,525

MD 100

Good

Over: EXECUTIVE PARK DRIVE

0.91 MILE WEST OF MD 104, Howard, MD

Built 1998 Load: 49.9 t ADT: 79,752

MD 100

Good

Over: CSX RR, O'CONNOR RD

0.24 M W OF AA CO LINE, Howard, MD

Built 1996 Load: 49.9 t ADT: 83,402

MD 100

Good

Over: CSX RR, O'CONNOR ROAD

0.24 M W OF AA CO LINE, Howard, MD

Built 1996 Load: 49.9 t ADT: 83,402

KNIGHTS BRIDGE RD

Good

Over: HAMMONDS BRANCH

0.2 MI S OF GORMAN RD, Howard, MD

Built 1992 Load: 51.2 t ADT: 1,230

CEDAR LANE

Good

Over: MIDDLE PATUXENT RIVER

.02 Mi N of MD 32, Howard, MD

Built 1994 Load: 52.2 t ADT: 17,121

MD 175 WBR

Good

Over: SNOWDEN RIVER PARKWAY

0.84 MILE WEST OF MD 108, Howard, MD

Built 2001 Load: 52.6 t ADT: 32,168

HAVILAND MILL ROAD

Good

Over: PATUXENT RIVER

1.5 MI E OF MD 650, Howard, MD

Built 1998 Load: 53.5 t ADT: 776

BETHANY LANE

Good

Over: LITTLE PATUXENT RIVER

0.1 MI N OF US RTE 40, Howard, MD

Built 2006 Load: 54.0 t ADT: 7,980

DORSEY RUN ROAD

Good

Over: DEEP RUN

0.5 MI SE OF US 1, Howard, MD

Built 1995 Load: 55.3 t ADT: 50

MD 175 EBR

Good

Over: SNOWDEN RIVER PARKWAY

0.84 MILE WEST OF MD 108, Howard, MD

Built 2001 Load: 55.8 t ADT: 30,855

MARRIOTTSVILLE ROA

Good

Over: LITTLE PATUXENT RIVER

0.23 MILE NORTH OF IS 70, Howard, MD

Built 1967 Load: 55.8 t ADT: 2,616

TRIADELPHIA ROAD

Good

Over: MIDDLE PATUXENT RIVER

1.2 MI S OF MD RTE 144, Howard, MD

Built 1986 Load: 56.7 t ADT: 2,474

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

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.