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)

SENECA ROAD

Poor

Over: BEAVER RUN BRANCH

0.5 MI E OF US RTE 29, Howard, MD

Built 1960 Load: 38.5 t ADT: 896

BROWNS BRIDGE ROAD

Poor

Over: PATUXENT RIVER

1.4 MI E OF MD 650, Howard, MD

Built 1953 Load: 39.9 t ADT: 5,772

TAMAR DRIVE

Poor

Over: UNNAMED STREAM

0.1 MI E PHELPS LUCK, Howard, MD

Built 1970 Load: 60.8 t ADT: 10,941

COLUMBIA ROAD

Poor

Over: PLUMTREE BRANCH

0.8 MI. NORTH OF MD. 108, Howard, MD

Built 1987 Load: 75.7 t ADT: 8,641

BELMONT WOODS ROAD

Poor

Over: ROCKBURN BRANCH

0.1 MI W OF I-95, Howard, MD

Built 1950 Load: 77.1 t ADT: 100

BROKEN LAND PARKWA

Poor

Over: TRIB LITTLE PATUXENT R

At Cradlerock Way, Howard, MD

Built 1972 Load: 79.8 t ADT: 10,000

ILCHESTER ROAD

Poor

Over: BONNIE BRANCH

AT BONNIE BRANCH RD, Howard, MD

Built 1945 Load: 99.9 t ADT: 1,281

QUARTER STAFF ROAD

Poor

Over: TRIB TO LITTLE PATUXENT

1000' NW of Martin Ln, Howard, MD

Built 1972 Load: 99.9 t ADT: 300

SUMMER HOLLOW LN

Poor

Over: UNNAMED STREAM

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

Built 1972 Load: 99.9 t ADT: 500

WESLEY LANE

Poor

Over: BRANCH OF DEEP RUN

50' east of MD 103, Howard, MD

Built 1972 Load: 99.9 t ADT: 500

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.