FHWA NBI 2024 Inspection record Public-domain dataset

MAPLE GROVE RD/TR2

Carrying MAPLE GROVE RD/TR2 over WENDALL BR

2.0 MI N TROY, Madison, Illinois

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
46 t Inventory load rating

Bridge Snapshot: MAPLE GROVE RD/TR2

The MAPLE GROVE RD/TR2 bridge in Madison, Illinois carries MAPLE GROVE RD/TR2 over WENDALL BR. It was built in 1978, making it 48 years old today. The structure is built primarily of prestressed concrete and spans 3 sections, stretching 28.3 meters (93 feet) end to end. Daily traffic averages 1,050 vehicles, placing it in the moderately-trafficked tier of Illinois bridges. It is owned and maintained by Town/Township Highway Agency.

The latest FHWA inspection records show a deck rating of 4/9, superstructure at 4/9, substructure at 6/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 46.0 metric tons.

Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.

How MAPLE GROVE RD/TR2 compares

▲ 11.4
Load rating vs Illinois average (34.6 t)
Top 11%
Higher load rating than 89% of Illinois bridges
543
Bridges in Madison · 35 in Poor condition
MAPLE GROVE RD/TR2 46.0 t
Illinois average 34.6 t

Live comparison across Illinois.

Historical Sufficiency Rating

PlainBridge-computed
59.4 / 100 - historical 50–79.9 band
Structural adequacy /55
30.0
Serviceability /30
17.1
Essentiality /15
14.3
Special reductions
−2.0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Deck
4/9
Poor (1–4)
Superstructure
4/9
Poor (1–4)
Substructure
6/9
Fair (5–6)
Inventory Load Rating
46.0 t
NBI inventory level (metric tons)
Overall Condition
Poor

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
1978
Material
Prestressed Concrete
Number of Spans
3
Structure Length
28.3 m (93 ft)
Deck Width
9.3 m (31 ft)
Owner
Town/Township Highway Agency
Avg Daily Traffic
1,050 vehicles/day
Structure Number
060322800000000

Condition Analysis

  • At 4/9, the deck (driving surface) is in poor shape, with advanced wear flagged for priority repair.
  • At 4/9, the superstructure (beams and supports above the deck) is in poor shape, with advanced wear flagged for priority repair.
  • The substructure (piers and abutments) rates fair at 6/9, minor deterioration that routine maintenance should address.

How to read this record

MAPLE GROVE RD/TR2 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 MAPLE GROVE RD/TR2 against other structures in Madison 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 MAPLE GROVE RD/TR2?

MAPLE GROVE RD/TR2 in Madison, Illinois has a deck rating of 4/9, superstructure rating of 4/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.

How often is MAPLE GROVE RD/TR2 inspected?

MAPLE GROVE RD/TR2'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 1,050 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. MAPLE GROVE RD/TR2 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 MAPLE GROVE RD/TR2?

MAPLE GROVE RD/TR2 has an NBI inventory load rating of 46.0 metric tons.

Who is responsible for maintaining MAPLE GROVE RD/TR2?

MAPLE GROVE RD/TR2 is owned and maintained by Town/Township Highway Agency.

How old is MAPLE GROVE RD/TR2 and does age affect safety?

MAPLE GROVE RD/TR2 was built in 1978, making it 48 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.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

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.