US Bridges

Madison ST / Il 97 over Walnut Street

Fair

Sangamon County, Illinois · 1BL N Jefferson St. · Structure no. 084018300000000

Built
1993
32 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
103 ft
1 main span
Daily traffic
10,700
2023 count
Owner
State
State Highway Agency

About this bridge

Madison ST / Il 97 over Walnut Street is a steel stringer/multi-beam or girder carrying Madison ST / Il 97 over Walnut Street in Sangamon County, Illinois. It was built in 1993, so it is 32 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 10,700 vehicles a day, roughly 5% of them trucks, projected to reach 5,202 by 2046. The structure is 103 ft (31.3 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMadison ST / Il 97
CrossesWalnut Street
Location1BL N Jefferson St.
RouteState Highway 97
CountySangamon County
StateIllinois
Coordinates39.80485, -89.66349
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length103 ft (31.3 m)
Longest span97 ft (29.7 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,700 (2023)
Projected traffic5,202 by 2046
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Madison ST / Il 97 over Walnut Street built?

It was built in 1993, making it 32 years old in 2025.

What condition is Madison ST / Il 97 over Walnut Street in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.

How much traffic does Madison ST / Il 97 over Walnut Street carry?

About 10,700 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Madison ST / Il 97 over Walnut Street?

The structure is 103 ft (31.3 m) long with a longest span of 97 ft (29.7 m) and a deck 43 ft wide.

Who owns Madison ST / Il 97 over Walnut Street?

It is owned by the State Highway Agency.