US Bridges

Il 101 over Lamoine River

Good

Schuyler County, Illinois · 1M E Il 99 · Structure no. 085051400000000

Built
2011
14 years old
Condition
Good
inspected December 2021
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
531 ft
6 main spans
Daily traffic
400
2023 count
Owner
State
State Highway Agency

About this bridge

Il 101 over Lamoine River is a steel continuous stringer/multi-beam or girder carrying Il 101 over Lamoine River in Schuyler County, Illinois. It was built in 2011, so it is 14 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 400 vehicles a day, roughly 9% of them trucks, projected to reach 404 by 2046. The structure is 531 ft (161.7 m) long and 35 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesIl 101
CrossesLamoine River
Location1M E Il 99
RouteState Highway 101
CountySchuyler County
StateIllinois
Coordinates40.22931, -90.75984
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length531 ft (161.7 m)
Longest span96 ft (29.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2023)
Projected traffic404 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 101 over Lamoine River built?

It was built in 2011, making it 14 years old in 2025.

What condition is Il 101 over Lamoine 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 December 2021.

How much traffic does Il 101 over Lamoine River carry?

About 400 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Il 101 over Lamoine River?

The structure is 531 ft (161.7 m) long with a longest span of 96 ft (29.3 m) and a deck 35 ft wide.

Who owns Il 101 over Lamoine River?

It is owned by the State Highway Agency.