IRONWOOD DRIVE
Carrying IRONWOOD DRIVE over ST JOSEPH RIVER
00.20 N SR 933, St. Joseph, Indiana
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: IRONWOOD DRIVE
The IRONWOOD DRIVE bridge in St. Joseph, Indiana carries IRONWOOD DRIVE over ST JOSEPH RIVER. It was built in 1929, making it 97 years old today. It was last reconstructed in 2011, extending its service life. The structure is built primarily of concrete and spans 3 sections, stretching 146.0 meters (479 feet) end to end. Daily traffic averages 15,593 vehicles, placing it in the heavily-trafficked tier of Indiana bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 7/9, substructure at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 32.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How IRONWOOD DRIVE compares
Live comparison across Indiana.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1929
- Last Reconstructed
- 2011
- Material
- Concrete
- Number of Spans
- 3
- Structure Length
- 146.0 m (479 ft)
- Deck Width
- 19.7 m (65 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 15,593 vehicles/day
- Structure Number
- 7100033
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
- • At 6/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
How to read this record
This page shows what the last federal inspection recorded, not whether IRONWOOD DRIVE 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 IRONWOOD DRIVE against other structures in St. Joseph and across Indiana. Indiana 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 IRONWOOD DRIVE?
IRONWOOD DRIVE in St. Joseph, Indiana has a deck rating of 5/9, superstructure rating of 7/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is IRONWOOD DRIVE inspected?
IRONWOOD DRIVE'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 15,593 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. IRONWOOD DRIVE 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 IRONWOOD DRIVE?
IRONWOOD DRIVE has an NBI inventory load rating of 32.7 metric tons.
Who is responsible for maintaining IRONWOOD DRIVE?
IRONWOOD DRIVE is owned and maintained by County Highway Agency.
How old is IRONWOOD DRIVE and does age affect safety?
IRONWOOD DRIVE was built in 1929, making it 97 years old and last reconstructed in 2011.
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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.