M 1608
Carrying M 1608 over MINNEHAHA CREEK
0.1 MI N OF JCT TH 55, Hennepin, Minnesota
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
M 1608 in Hennepin, Minnesota sits above 1% of rated Minnesota bridges on inventory load rating (8 t), while its 1890 build year is earlier than 100% of Hennepin's recorded-year cohort (936 bridges).
M 1608 in Hennepin, Minnesota is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1890, it carries 2 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 4. The lowest applicable rating sets the federal condition category, so this Poor 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:4559
PRE-1950 · MAT-OTHER · SINGLE-SPAN · TIED-CTRL · ARTERIAL-ADT · LIGHT-LOAD · CAT-POOR
- PRE-1950 Pre-1950
- MAT-OTHER Other
- SINGLE-SPAN Single span
- TIED-CTRL Tied control
- ARTERIAL-ADT Arterial ADT
- LIGHT-LOAD Light load
- CAT-POOR Poor
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: M 1608
The M 1608 bridge in Hennepin, Minnesota carries M 1608 over MINNEHAHA CREEK. It was built in 1890, making it 136 years old today. The structure is built primarily of masonry and spans 1 section, stretching 10.7 meters (35 feet) end to end. Daily traffic averages 4,334 vehicles, placing it in the moderately-trafficked tier of Minnesota bridges. It is owned and maintained by Local Park/Forest/Reservation.
The latest FHWA inspection records show superstructure at 4/9, substructure at 4/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order.
How M 1608 compares
Age against the county: built in 1890, earlier than 934 of Hennepin's 936 bridges with a recorded construction year (100%), 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).
M 1608 vs every rated Minnesota bridge
Inventory load rating (metric tons), FHWA NBI, this state
8 Top 99% higher than 1% 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.
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.
Hennepin inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 936 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
- 1890
- Material
- Masonry
- Number of Spans
- 1
- Structure Length
- 10.7 m (35 ft)
- Deck Width
- 23.2 m (76 ft)
- Owner
- Local Park/Forest/Reservation
- Avg Daily Traffic
- 4,334 vehicles/day
- Structure Number
- 4559
Condition Analysis
- • At 4/9, the superstructure (beams and supports above the deck) is in poor shape, with advanced wear on file for this vintage.
- • The substructure (piers and abutments) rates poor at 4/9, with advanced deterioration recorded on the latest inspection.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
M 1608 is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare M 1608 against other structures in Hennepin 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 M 1608?
M 1608 in Hennepin, Minnesota, superstructure rating of 4/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is M 1608 inspected?
M 1608'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 4,334 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. M 1608 is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for M 1608?
M 1608 has an NBI inventory load rating of 8.2 metric tons.
Who is responsible for maintaining M 1608?
M 1608 is owned and maintained by Local Park/Forest/Reservation.
How old is M 1608 and does age affect safety?
M 1608 was built in 1890, making it 136 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.