US Bridges

Il 78 over Little Jobs Creek

Good

Cass County, Illinois · 4.3M N Il 125 · Structure no. 009001300000000

Built
1994
31 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
105 ft
1 main span
Daily traffic
1,500
2023 count
Owner
State
State Highway Agency

About this bridge

Il 78 over Little Jobs Creek is a steel stringer/multi-beam or girder carrying Il 78 over Little Jobs Creek in Cass County, Illinois. It was built in 1994, so it is 31 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 1,500 vehicles a day, roughly 10% of them trucks, projected to reach 1,667 by 2046. The structure is 105 ft (32 m) long and 35 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesIl 78
CrossesLittle Jobs Creek
Location4.3M N Il 125
RouteState Highway 78
Coordinates40.00773, -90.18508
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 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 rating60 US tons
Inventory rating46.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length105 ft (32 m)
Longest span102 ft (31.2 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2023)
Projected traffic1,667 by 2046
Trucks10%
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 78 over Little Jobs Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Il 78 over Little Jobs 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 September 2023.

How much traffic does Il 78 over Little Jobs Creek carry?

About 1,500 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Il 78 over Little Jobs Creek?

The structure is 105 ft (32 m) long with a longest span of 102 ft (31.2 m) and a deck 35 ft wide.

Who owns Il 78 over Little Jobs Creek?

It is owned by the State Highway Agency.