US Bridges

Townhall RD over I 90

Good

Boone County, Illinois · 2 MI E of US 20 · Structure no. 004996000000000

Built
2014
11 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
235 ft
2 main spans
Daily traffic
475
2013 count
Owner
Toll Authority
State Toll Authority

About this bridge

Townhall RD over I 90 is a concrete stringer/multi-beam or girder carrying Townhall RD over I 90 in Boone County, Illinois. It was built in 2014, so it is 11 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 475 vehicles a day, roughly 13% of them trucks, projected to reach 494 by 2046. The structure is 235 ft (71.5 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTownhall RD
CrossesI 90
Location2 MI E of US 20
RouteCity Street 0
CountyBoone County
StateIllinois
Coordinates42.23382, -88.88084
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length235 ft (71.5 m)
Longest span119 ft (36.3 m)
Deck width35 ft (10.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic475 (2013)
Projected traffic494 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 Townhall RD over I 90 built?

It was built in 2014, making it 11 years old in 2025.

What condition is Townhall RD over I 90 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does Townhall RD over I 90 carry?

About 475 vehicles per day (2013 count), of which roughly 13% are trucks.

How long is Townhall RD over I 90?

The structure is 235 ft (71.5 m) long with a longest span of 119 ft (36.3 m) and a deck 35 ft wide.

Who owns Townhall RD over I 90?

It is owned by the State Toll Authority.