US016
Carrying US016 over SPRING CK
1.8 W JCT US 385, Pennington, South Dakota
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
US016 in Pennington, South Dakota sits above 90% of rated South Dakota bridges on inventory load rating (54 t), while its 1986 build year is earlier than 26% of Pennington's recorded-year cohort (348 bridges).
US016 in Pennington, South Dakota is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1986, it carries 1 rated component 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 SD:000000052257401
LATE-CENTURY · CONCRETE · MULTI-SPAN · CULVERT-LED · ARTERIAL-ADT · HEAVY-LOAD · CAT-FAIR
- LATE-CENTURY 1980–1999
- CONCRETE Concrete
- MULTI-SPAN 3 spans
- CULVERT-LED Culvert-led
- ARTERIAL-ADT Arterial ADT
- HEAVY-LOAD Heavy 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: US016
The US016 bridge in Pennington, South Dakota carries US016 over SPRING CK. It was built in 1986, making it 40 years old today. The structure is built primarily of concrete continuous and spans 3 sections, stretching 16.2 meters (53 feet) end to end. Daily traffic averages 6,231 vehicles, placing it in the moderately-trafficked tier of South Dakota bridges. It is owned and maintained by State 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.
How US016 compares
Age against the county: built in 1986, earlier than 91 of Pennington's 348 bridges with a recorded construction year (26%), against a county median build year of 1973. This is one of the newer structures in its county.
Live comparison across South Dakota bridges with a recorded inventory load rating (5,886 of 5,887 rated).
US016 vs every rated South Dakota bridge
Inventory load rating (metric tons), FHWA NBI, this state
54 Top 10% higher than 90% of 5,886 bridges
rated South Dakota 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.
Pennington inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 348 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
- 1986
- Material
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 16.2 m (53 ft) 0
- Owner
- State Highway Agency
- Avg Daily Traffic
- 6,231 vehicles/day
- Structure Number
- 000000052257401
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 US016 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 US016 against other structures in Pennington and across South Dakota. South Dakota 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 US016?
US016 in Pennington, South Dakota on the FHWA's 0–9 scale.
How often is US016 inspected?
US016'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 6,231 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. US016 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 US016?
US016 has an NBI inventory load rating of 54.4 metric tons.
Who is responsible for maintaining US016?
US016 is owned and maintained by State Highway Agency.
How old is US016 and does age affect safety?
US016 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.
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.