MUD CREEK TR 308
Carrying MUD CREEK TR 308 over MUD CREEK
1.5 MI N ILL 13, St. Clair, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: MUD CREEK TR 308
The MUD CREEK TR 308 bridge in St. Clair, Illinois carries MUD CREEK TR 308 over MUD CREEK. It was built in 1969, making it 57 years old today. The structure is built primarily of prestressed concrete and spans 5 sections, stretching 71.9 meters (236 feet) end to end. Daily traffic averages 750 vehicles, placing it in the lower-traffic tier of Illinois bridges. It is owned and maintained by Town/Township Highway Agency.
The latest FHWA inspection records show a deck rating of 2/9, superstructure at 2/9, substructure at 7/9. The weakest component sits in critical condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed. Its NBI inventory load rating is 31.1 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How MUD CREEK TR 308 compares
Live comparison across Illinois.
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 How the historical reference is calculated.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
- Number of Spans
- 5
- Structure Length
- 71.9 m (236 ft)
- Deck Width
- 9.1 m (30 ft)
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 750 vehicles/day
- Structure Number
- 082408200000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in critical condition (2/9), with severe deterioration requiring urgent attention.
- • The superstructure (beams and supports above the deck) is in critical condition (2/9), with severe deterioration requiring urgent attention.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
How to read this record
MUD CREEK TR 308 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 MUD CREEK TR 308 against other structures in St. Clair and across Illinois. Illinois 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 MUD CREEK TR 308?
MUD CREEK TR 308 in St. Clair, Illinois has a deck rating of 2/9, superstructure rating of 2/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is MUD CREEK TR 308 inspected?
MUD CREEK TR 308'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 750 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MUD CREEK TR 308 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 MUD CREEK TR 308?
MUD CREEK TR 308 has an NBI inventory load rating of 31.1 metric tons.
Who is responsible for maintaining MUD CREEK TR 308?
MUD CREEK TR 308 is owned and maintained by Town/Township Highway Agency.
How old is MUD CREEK TR 308 and does age affect safety?
MUD CREEK TR 308 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.