US Bridges

Il 16 over Sangamon Creek

Good

Montgomery County, Illinois · W Cl Ohlman · Structure no. 068250900000000

Built
2024
1 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
1,700
2021 count
Owner
State
State Highway Agency

About this bridge

Il 16 over Sangamon Creek is a concrete culvert carrying Il 16 over Sangamon Creek in Montgomery County, Illinois. It was built in 2024, so it is 1 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,700 vehicles a day, roughly 11% of them trucks, projected to reach 1,717 by 2046. The structure is 33 ft (10.1 m) long and 60 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesIl 16
CrossesSangamon Creek
LocationW Cl Ohlman
RouteState Highway 16
CountyMontgomery County
StateIllinois
Coordinates39.3436, -89.22121
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.8 US tons
Inventory rating55.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 25 or greater
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width60 ft (18.3 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2021)
Projected traffic1,717 by 2046
Trucks11%
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 Sangamon Creek built?

It was built in 2024, making it 1 years old in 2025.

What condition is Il 16 over Sangamon Creek 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 2024.

How much traffic does Il 16 over Sangamon Creek carry?

About 1,700 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is Il 16 over Sangamon Creek?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m) and a deck 60 ft wide.

Who owns Il 16 over Sangamon Creek?

It is owned by the State Highway Agency.