MSAS 199
Carrying MSAS 199 over E SWAN RIVER
3.3 MI E OF JCT TH169, St. Louis, Minnesota
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
MSAS 199 in St. Louis, Minnesota sits above 26% of rated Minnesota bridges on inventory load rating (32 t), while its 1959 build year is earlier than 86% of St. Louis's recorded-year cohort (663 bridges).
MSAS 199 in St. Louis, Minnesota is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1959, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good 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 MN:L4171
INTERSTATE-ERA · STEEL · SINGLE-SPAN · CULVERT-LED · LOCAL-ADT · STANDARD-LOAD · CAT-GOOD
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- SINGLE-SPAN Single span
- CULVERT-LED Culvert-led
- LOCAL-ADT Local ADT
- STANDARD-LOAD Standard load
- CAT-GOOD Good
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: MSAS 199
The MSAS 199 bridge in St. Louis, Minnesota carries MSAS 199 over E SWAN RIVER. It was built in 1959, making it 67 years old today. The structure is built primarily of steel and spans 1 section, stretching 7.5 meters (25 feet) end to end. Daily traffic averages 375 vehicles, placing it in the lower-traffic tier of Minnesota bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How MSAS 199 compares
Age against the county: built in 1959, earlier than 567 of St. Louis's 663 bridges with a recorded construction year (86%), against a county median build year of 1988. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Minnesota bridges with a recorded inventory load rating (13,532 rated).
MSAS 199 vs every rated Minnesota bridge
Inventory load rating (metric tons), FHWA NBI, this state
32 Top 74% higher than 26% of 13,532 bridges
rated Minnesota 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.
St. Louis inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 663 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
- 1959
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 7.5 m (25 ft) 0
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 375 vehicles/day
- Structure Number
- L4171
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 MSAS 199 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 MSAS 199 against other structures in St. Louis and across Minnesota. Minnesota 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 MSAS 199?
MSAS 199 in St. Louis, Minnesota on the FHWA's 0–9 scale.
How often is MSAS 199 inspected?
MSAS 199'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 375 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MSAS 199 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 MSAS 199?
MSAS 199 has an NBI inventory load rating of 32.4 metric tons.
Who is responsible for maintaining MSAS 199?
MSAS 199 is owned and maintained by City/Municipal Highway Agency.
How old is MSAS 199 and does age affect safety?
MSAS 199 was built in 1959, making it 67 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.