SOUTH WATERSIDE DR
Carrying SOUTH WATERSIDE DR over ROCK CREEK PARKWAY (NB)
0.4 MILES FROM P STREET., District of Columbia, District of Columbia
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
SOUTH WATERSIDE DR in District of Columbia, District of Columbia sits above 7% of rated District of Columbia bridges on inventory load rating (23 t), while its 1940 build year is earlier than 82% of District of Columbia's recorded-year cohort (257 bridges).
SOUTH WATERSIDE DR in District of Columbia, District of Columbia is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1940, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 6. 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 DC:3450034P0000000
PRE-1950 · CONCRETE · SINGLE-SPAN · SUPER-LED · HEAVY-ADT · STANDARD-LOAD · CAT-FAIR
- PRE-1950 Pre-1950
- CONCRETE Concrete
- SINGLE-SPAN Single span
- SUPER-LED Superstructure-led
- HEAVY-ADT Heavy 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: SOUTH WATERSIDE DR
The SOUTH WATERSIDE DR bridge in District of Columbia, District of Columbia carries SOUTH WATERSIDE DR over ROCK CREEK PARKWAY (NB). It was built in 1940, making it 86 years old today. The structure is built primarily of concrete and spans 1 section, stretching 25.9 meters (85 feet) end to end. Daily traffic averages 15,152 vehicles, placing it in the heavily-trafficked tier of District of Columbia bridges. It is owned and maintained by National Park Service.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 6/9, substructure at 7/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How SOUTH WATERSIDE DR compares
Age against the county: built in 1940, earlier than 210 of District of Columbia's 257 bridges with a recorded construction year (82%), against a county median build year of 1960. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across District of Columbia bridges with a recorded inventory load rating (257 rated).
SOUTH WATERSIDE DR vs every rated District of Columbia bridge
Inventory load rating (metric tons), FHWA NBI, this state
23 Top 93% higher than 7% of 257 bridges
rated District of Columbia 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.
District of Columbia inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 257 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
- 1940
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 25.9 m (85 ft)
- Deck Width
- 12.0 m (39 ft)
- Owner
- National Park Service
- Avg Daily Traffic
- 15,152 vehicles/day
- Structure Number
- 3450034P0000000
Condition Analysis
- • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
- • The superstructure (beams and supports above the deck) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
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 SOUTH WATERSIDE DR 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 SOUTH WATERSIDE DR against other structures in District of Columbia and across District of Columbia. District of Columbia 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 SOUTH WATERSIDE DR?
SOUTH WATERSIDE DR in District of Columbia, District of Columbia has a deck rating of 7/9, superstructure rating of 6/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is SOUTH WATERSIDE DR inspected?
SOUTH WATERSIDE DR'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 15,152 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SOUTH WATERSIDE DR 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 SOUTH WATERSIDE DR?
SOUTH WATERSIDE DR has an NBI inventory load rating of 22.7 metric tons.
Who is responsible for maintaining SOUTH WATERSIDE DR?
SOUTH WATERSIDE DR is owned and maintained by National Park Service.
How old is SOUTH WATERSIDE DR and does age affect safety?
SOUTH WATERSIDE DR was built in 1940, making it 86 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.