I-370 WBR
Carrying I-370 WBR over IS-370 RP1, MD200 RP7
5.67 MI WEST OF MD97, Montgomery, Maryland
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: I-370 WBR
The I-370 WBR bridge in Montgomery, Maryland carries I-370 WBR over IS-370 RP1, MD200 RP7. It was built in 2010, making it 16 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 36.0 meters (118 feet) end to end. Daily traffic averages 39,531 vehicles, placing it in the heavily-trafficked tier of Maryland bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 8/9, substructure at 8/9. The weakest component sits in good condition. All reported major components score above the Poor range. Its NBI inventory load rating is 50.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How I-370 WBR 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 How the historical reference is calculated.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
- 2010
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 36.0 m (118 ft)
- Deck Width
- 26.0 m (85 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 39,531 vehicles/day
- Structure Number
- 100000150197014
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • The superstructure (beams and supports above the deck) is in good condition (8/9), showing no significant deterioration.
- • The substructure (piers and abutments) is in good condition (8/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether I-370 WBR 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 I-370 WBR against other structures in Montgomery 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 I-370 WBR?
I-370 WBR in Montgomery, Maryland has a deck rating of 7/9, superstructure rating of 8/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.
How often is I-370 WBR inspected?
I-370 WBR'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 39,531 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. I-370 WBR is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for I-370 WBR?
I-370 WBR has an NBI inventory load rating of 50.8 metric tons.
Who is responsible for maintaining I-370 WBR?
I-370 WBR is owned and maintained by State Highway Agency.
How old is I-370 WBR and does age affect safety?
I-370 WBR was built in 2010, making it 16 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.