SHEA ROAD
Carrying SHEA ROAD over BEAUBIEN CREEK DRAIN
SEC 17-20 COTTRELLVILLE, St. Clair, Michigan
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
SHEA ROAD in St. Clair, Michigan sits above 22% of rated Michigan bridges on inventory load rating (32 t), while its 1963 build year is earlier than 84% of St. Clair's recorded-year cohort (327 bridges).
SHEA ROAD in St. Clair, Michigan is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1963, 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:000000000010031
INTERSTATE-ERA · STEEL · MULTI-SPAN · CULVERT-LED · ARTERIAL-ADT · STANDARD-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- MULTI-SPAN 2 spans
- CULVERT-LED Culvert-led
- ARTERIAL-ADT Arterial 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: SHEA ROAD
The SHEA ROAD bridge in St. Clair, Michigan carries SHEA ROAD over BEAUBIEN CREEK DRAIN. It was built in 1963, making it 63 years old today. The structure is built primarily of steel and spans 2 sections, stretching 9.4 meters (31 feet) end to end. Daily traffic averages 2,500 vehicles, placing it in the moderately-trafficked 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. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed.
How SHEA ROAD compares
Age against the county: built in 1963, earlier than 274 of St. Clair's 327 bridges with a recorded construction year (84%), against a county median build year of 1985. 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).
SHEA ROAD vs every rated Michigan bridge
Inventory load rating (metric tons), FHWA NBI, this state
32 Top 78% higher than 22% 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.
St. Clair inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 327 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
- 1963
- Material
- Steel
- Number of Spans
- 2
- Structure Length
- 9.4 m (31 ft) 0
- Owner
- County Highway Agency
- Avg Daily Traffic
- 2,500 vehicles/day
- Structure Number
- 000000000010031
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
SHEA 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 SHEA ROAD against other structures in St. Clair 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 SHEA ROAD?
SHEA ROAD in St. Clair, Michigan on the FHWA's 0–9 scale.
How often is SHEA ROAD inspected?
SHEA 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 2,500 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SHEA 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 SHEA ROAD?
SHEA ROAD has an NBI inventory load rating of 32.1 metric tons.
Who is responsible for maintaining SHEA ROAD?
SHEA ROAD is owned and maintained by County Highway Agency.
How old is SHEA ROAD and does age affect safety?
SHEA ROAD was built in 1963, making it 63 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.