PALMER ROAD SOUTH
Carrying PALMER ROAD SOUTH over E PALMER RD STONEY CREEK
500M E OF WOOD RD, Montgomery, Maryland
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
PALMER ROAD SOUTH in Montgomery, Maryland sits above 32% of rated Maryland bridges on inventory load rating (37 t), while its 1981 build year is earlier than 50% of Montgomery's recorded-year cohort (515 bridges).
PALMER ROAD SOUTH in Montgomery, Maryland is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1981, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 5. The lowest applicable rating sets the federal condition category, so this Fair result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure MD:1MD260W
LATE-CENTURY · CONCRETE · MULTI-SPAN · SUPER-LED · ARTERIAL-ADT · STANDARD-LOAD · CAT-FAIR
- LATE-CENTURY 1980–1999
- CONCRETE Concrete
- MULTI-SPAN 3 spans
- SUPER-LED Superstructure-led
- ARTERIAL-ADT Arterial ADT
- STANDARD-LOAD Standard load
- CAT-FAIR Fair
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: PALMER ROAD SOUTH
The PALMER ROAD SOUTH bridge in Montgomery, Maryland carries PALMER ROAD SOUTH over E PALMER RD STONEY CREEK. It was built in 1981, making it 45 years old today. The structure is built primarily of concrete continuous and spans 3 sections, stretching 85.3 meters (280 feet) end to end. Daily traffic averages 2,750 vehicles, placing it in the moderately-trafficked tier of Maryland bridges. It is owned and maintained by Army.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 5/9, substructure at 6/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range.
How PALMER ROAD SOUTH compares
Age against the county: built in 1981, earlier than 259 of Montgomery's 515 bridges with a recorded construction year (50%), against a county median build year of 1982. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Maryland bridges with a recorded inventory load rating (5,479 of 5,484 rated).
PALMER ROAD SOUTH vs every rated Maryland bridge
Inventory load rating (metric tons), FHWA NBI, this state
37 Top 68% higher than 32% of 5,479 bridges
rated Maryland bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Montgomery inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 515 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1981
- Material
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 85.3 m (280 ft)
- Deck Width
- 11.6 m (38 ft)
- Owner
- Army
- Avg Daily Traffic
- 2,750 vehicles/day
- Structure Number
- 1MD260W
Condition Analysis
- • At 6/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • The superstructure (beams and supports above the deck) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
- • The substructure (piers and abutments) rates fair at 6/9, minor deterioration that routine maintenance should address.
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 PALMER ROAD SOUTH 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 PALMER ROAD SOUTH 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 PALMER ROAD SOUTH?
PALMER ROAD SOUTH in Montgomery, Maryland has a deck rating of 6/9, superstructure rating of 5/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is PALMER ROAD SOUTH inspected?
PALMER ROAD SOUTH'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 2,750 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. PALMER ROAD SOUTH 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 PALMER ROAD SOUTH?
PALMER ROAD SOUTH has an NBI inventory load rating of 37.3 metric tons.
Who is responsible for maintaining PALMER ROAD SOUTH?
PALMER ROAD SOUTH is owned and maintained by Army.
How old is PALMER ROAD SOUTH and does age affect safety?
PALMER ROAD SOUTH was built in 1981, making it 45 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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.