MD 845A
Carrying MD 845A over LITTLE ANTIETAM CREEK
0.56 MILE NORTH OF MD 34, Washington, Maryland
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: MD 845A
The MD 845A bridge in Washington, Maryland carries MD 845A over LITTLE ANTIETAM CREEK. It was built in 1927, making it 99 years old today. The structure is built primarily of concrete and spans 1 section, stretching 15.2 meters (50 feet) end to end. Daily traffic averages 490 vehicles, placing it in the lower-traffic tier of Maryland bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 6/9, substructure at 6/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 45.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How MD 845A 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 How the historical reference is calculated.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
- 1927
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 15.2 m (50 ft)
- Deck Width
- 11.1 m (36 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 490 vehicles/day
- Structure Number
- 100000210004010
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • The substructure (piers and abutments) rates fair at 6/9, minor deterioration that routine maintenance should address.
How to read this record
This page shows what the last federal inspection recorded, not whether MD 845A 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 MD 845A against other structures in Washington 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 MD 845A?
MD 845A in Washington, Maryland has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is MD 845A inspected?
MD 845A'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 490 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MD 845A 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 MD 845A?
MD 845A has an NBI inventory load rating of 45.8 metric tons.
Who is responsible for maintaining MD 845A?
MD 845A is owned and maintained by State Highway Agency.
How old is MD 845A and does age affect safety?
MD 845A was built in 1927, making it 99 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.