COLUMBIA ROAD
Carrying COLUMBIA ROAD over RED HILL BRANCH
0.4 MI N OF MD RTE 108, Howard, Maryland
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: COLUMBIA ROAD
The COLUMBIA ROAD bridge in Howard, Maryland carries COLUMBIA ROAD over RED HILL BRANCH. It was built in 1986, making it 40 years old today. The structure is built primarily of aluminum/iron and spans 3 sections, stretching 24.2 meters (79 feet) end to end. Daily traffic averages 4,946 vehicles, placing it in the moderately-trafficked tier of Maryland bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show culvert at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 39.9 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How COLUMBIA ROAD compares
Live comparison across Maryland.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1986
- Material
- Aluminum/Iron
- Number of Spans
- 3
- Structure Length
- 24.2 m (79 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 4,946 vehicles/day
- Structure Number
- 200000HO0146030
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether COLUMBIA ROAD is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare COLUMBIA ROAD against other structures in Howard and across Maryland. Maryland bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for COLUMBIA ROAD?
COLUMBIA ROAD in Howard, Maryland on the FHWA's 0–9 scale.
How often is COLUMBIA ROAD inspected?
COLUMBIA ROAD's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 4,946 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. COLUMBIA ROAD is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for COLUMBIA ROAD?
COLUMBIA ROAD has an NBI inventory load rating of 39.9 metric tons.
Who is responsible for maintaining COLUMBIA ROAD?
COLUMBIA ROAD is owned and maintained by County Highway Agency.
How old is COLUMBIA ROAD and does age affect safety?
COLUMBIA ROAD was built in 1986, making it 40 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
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.