US Bridges

Il 127 over Kaskaskia River

Good

Clinton County, Illinois · 2.5 M SE Carlyle · Structure no. 014003300000000

Built
2015
10 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,157 ft
6 main spans
Daily traffic
3,550
2023 count
Owner
State
State Highway Agency

About this bridge

Il 127 over Kaskaskia River is a steel continuous stringer/multi-beam or girder carrying Il 127 over Kaskaskia River in Clinton County, Illinois. It was built in 2015, so it is 10 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 3,550 vehicles a day, roughly 14% of them trucks, projected to reach 4,125 by 2046. The structure is 1,157 ft (352.6 m) long and 39 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesIl 127
CrossesKaskaskia River
Location2.5 M SE Carlyle
RouteState Highway 127
CountyClinton County
StateIllinois
Coordinates38.5771, -89.3711
Functional classRural Minor Arterial

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 inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length1,157 ft (352.6 m)
Longest span200 ft (61 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,550 (2023)
Projected traffic4,125 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

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 127 over Kaskaskia River built?

It was built in 2015, making it 10 years old in 2025.

What condition is Il 127 over Kaskaskia River 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 November 2024.

How much traffic does Il 127 over Kaskaskia River carry?

About 3,550 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is Il 127 over Kaskaskia River?

The structure is 1,157 ft (352.6 m) long with a longest span of 200 ft (61 m) and a deck 39 ft wide.

Who owns Il 127 over Kaskaskia River?

It is owned by the State Highway Agency.