IS 170 E
Carrying IS 170 E over RVR DES PERES
S 29 T 46 N R 6 E, St. Louis, Missouri
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: IS 170 E
The IS 170 E bridge in St. Louis, Missouri carries IS 170 E over RVR DES PERES. It was built in 1968, making it 58 years old today. The structure is built primarily of concrete continuous and spans 3 sections, stretching 17.1 meters (56 feet) end to end. Daily traffic averages 94,602 vehicles, placing it in the heavily-trafficked tier of Missouri bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert at 4/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules. Its NBI inventory load rating is 43.2 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How IS 170 E compares
Live comparison across Missouri.
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 How the historical reference is calculated.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
- 1968
- Material
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 17.1 m (56 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 94,602 vehicles/day
- Structure Number
- 2424
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
IS 170 E 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 IS 170 E against other structures in St. Louis and across Missouri. Missouri 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 IS 170 E?
IS 170 E in St. Louis, Missouri on the FHWA's 0–9 scale.
How often is IS 170 E inspected?
IS 170 E'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 94,602 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. IS 170 E 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 IS 170 E?
IS 170 E has an NBI inventory load rating of 43.2 metric tons.
Who is responsible for maintaining IS 170 E?
IS 170 E is owned and maintained by State Highway Agency.
How old is IS 170 E and does age affect safety?
IS 170 E was built in 1968, making it 58 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.