US Bridges

Il 16 over Shoal Creek Trib.

Good

Montgomery County, Illinois · Nokomis W City Limit · Structure no. 068050200000000

Built
2002
23 years old
Condition
Good
inspected December 2022
Type
Slab
Concrete Continuous
Length
54 ft
3 main spans
Daily traffic
1,750
2023 count
Owner
State
State Highway Agency

About this bridge

Il 16 over Shoal Creek Trib. is a concrete continuous slab carrying Il 16 over Shoal Creek Trib. in Montgomery County, Illinois. It was built in 2002, so it is 23 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,750 vehicles a day, roughly 9% of them trucks, projected to reach 2,273 by 2046. The structure is 54 ft (16.5 m) long and 39 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesIl 16
CrossesShoal Creek Trib.
LocationNokomis W City Limit
RouteState Highway 16
Coordinates39.29669, -89.29303
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span20 ft (6 m)
Deck width39 ft (11.8 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,750 (2023)
Projected traffic2,273 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Il 16 over Shoal Creek Trib. built?

It was built in 2002, making it 23 years old in 2025.

What condition is Il 16 over Shoal Creek Trib. 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 December 2022.

How much traffic does Il 16 over Shoal Creek Trib. carry?

About 1,750 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Il 16 over Shoal Creek Trib.?

The structure is 54 ft (16.5 m) long with a longest span of 20 ft (6 m) and a deck 39 ft wide.

Who owns Il 16 over Shoal Creek Trib.?

It is owned by the State Highway Agency.