US Bridges

Il 125 over Lost Creek

Good

Cass County, Illinois · Bluff SPRG/5M E US67 · Structure no. 009050300000000

Built
2001
24 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
161 ft
3 main spans
Daily traffic
3,900
2023 count
Owner
State
State Highway Agency

About this bridge

Il 125 over Lost Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Il 125 over Lost Creek in Cass County, Illinois. It was built in 2001, so it is 24 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 3,900 vehicles a day, roughly 10% of them trucks, projected to reach 3,535 by 2046. The structure is 161 ft (49 m) long and 43 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

Open in Google Maps
CarriesIl 125
CrossesLost Creek
LocationBluff SPRG/5M E US67
RouteState Highway 125
CountyCass County
StateIllinois
Coordinates39.99025, -90.34816
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating76.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length161 ft (49 m)
Longest span62 ft (18.8 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,900 (2023)
Projected traffic3,535 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 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 125 over Lost Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is Il 125 over Lost 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 2023.

How much traffic does Il 125 over Lost Creek carry?

About 3,900 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Il 125 over Lost Creek?

The structure is 161 ft (49 m) long with a longest span of 62 ft (18.8 m) and a deck 43 ft wide.

Who owns Il 125 over Lost Creek?

It is owned by the State Highway Agency.