US Bridges

Town Hall Road over Unnamed Stream

Good

Boone County, Illinois · 0.25MI S of US 20 · Structure no. 004700500000000

Built
2010
15 years old
Condition
Good
inspected June 2021
Type
Culvert
Concrete
Length
100 ft
3 main spans
Daily traffic
4,950
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Town Hall Road over Unnamed Stream is a concrete culvert carrying Town Hall Road over Unnamed Stream in Boone County, Illinois. It was built in 2010, so it is 15 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 4,950 vehicles a day, roughly 15% of them trucks, projected to reach 5,148 by 2046. The structure is 100 ft (30.4 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTown Hall Road
CrossesUnnamed Stream
Location0.25MI S of US 20
RouteCity Street 0
CountyBoone County
StateIllinois
Coordinates42.23659, -88.8809
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length100 ft (30.4 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,950 (2018)
Projected traffic5,148 by 2046
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Town Hall Road over Unnamed Stream built?

It was built in 2010, making it 15 years old in 2025.

What condition is Town Hall Road over Unnamed Stream 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 2021.

How much traffic does Town Hall Road over Unnamed Stream carry?

About 4,950 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is Town Hall Road over Unnamed Stream?

The structure is 100 ft (30.4 m) long with a longest span of 13 ft (4 m).

Who owns Town Hall Road over Unnamed Stream?

It is owned by the City or Municipal Highway Agency.