30TH ST
Carrying 30TH ST over MASSACHUSETTS/CONRAIL
00.10 W OF EMERSON AVE, Marion, Indiana
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: 30TH ST
The 30TH ST bridge in Marion, Indiana carries 30TH ST over MASSACHUSETTS/CONRAIL. It was built in 1969, making it 57 years old today. The structure is built primarily of prestressed concrete continuous. Daily traffic averages 10,260 vehicles, placing it in the heavily-trafficked tier of Indiana bridges.
The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. All reported major components score above the Poor range.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How 30TH ST 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 How the historical reference is calculated.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
- 1969
- Material
- Prestressed Concrete Continuous
- Avg Daily Traffic
- 10,260 vehicles/day
- Structure Number
- 4900150
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 30TH ST 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 30TH ST against other structures in Marion 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 30TH ST?
30TH ST in Marion, Indiana on the FHWA's 0–9 scale.
How often is 30TH ST inspected?
30TH ST'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 10,260 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. 30TH ST is currently shown as unrated condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for 30TH ST?
An inventory load rating is not recorded for 30TH ST.
Who is responsible for maintaining 30TH ST?
Ownership is not specified for 30TH ST in the NBI.
How old is 30TH ST and does age affect safety?
30TH ST was built in 1969, making it 57 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.
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.