BROTT ROAD
Carrying BROTT ROAD over PROUTY DRAIN
0.1 MILE S OF WIGENT RD, Hillsdale, Michigan
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
BROTT ROAD in Hillsdale, Michigan sits above 46% of rated Michigan bridges on inventory load rating (38 t), while its 1948 build year is earlier than 79% of Hillsdale's recorded-year cohort (105 bridges).
BROTT ROAD in Hillsdale, Michigan is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1948, it carries 1 rated component 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 MI:000000000003328
PRE-1950 · STEEL · SINGLE-SPAN · CULVERT-LED · TRACE-ADT · STANDARD-LOAD · CAT-POOR
- PRE-1950 Pre-1950
- STEEL Steel
- SINGLE-SPAN Single span
- CULVERT-LED Culvert-led
- TRACE-ADT Trace ADT
- STANDARD-LOAD Standard 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: BROTT ROAD
The BROTT ROAD bridge in Hillsdale, Michigan carries BROTT ROAD over PROUTY DRAIN. It was built in 1948, making it 78 years old today. The structure is built primarily of steel and spans 1 section, stretching 6.1 meters (20 feet) end to end. Daily traffic averages 48 vehicles, placing it in the lower-traffic tier of Michigan bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show culvert 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 BROTT ROAD compares
Age against the county: built in 1948, earlier than 83 of Hillsdale's 105 bridges with a recorded construction year (79%), against a county median build year of 1980. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Michigan bridges with a recorded inventory load rating (11,366 of 11,371 rated).
BROTT ROAD vs every rated Michigan bridge
Inventory load rating (metric tons), FHWA NBI, this state
38 Top 54% higher than 46% of 11,366 bridges
rated Michigan 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.
Hillsdale inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 105 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
- 1948
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 6.1 m (20 ft) 0
- Owner
- County Highway Agency
- Avg Daily Traffic
- 48 vehicles/day
- Structure Number
- 000000000003328
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
BROTT ROAD 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 BROTT ROAD against other structures in Hillsdale and across Michigan. Michigan 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 BROTT ROAD?
BROTT ROAD in Hillsdale, Michigan on the FHWA's 0–9 scale.
How often is BROTT ROAD inspected?
BROTT ROAD'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 48 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. BROTT ROAD 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 BROTT ROAD?
BROTT ROAD has an NBI inventory load rating of 37.9 metric tons.
Who is responsible for maintaining BROTT ROAD?
BROTT ROAD is owned and maintained by County Highway Agency.
How old is BROTT ROAD and does age affect safety?
BROTT ROAD was built in 1948, making it 78 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.