US Bridges

Ill 78 over Little Indian CR

Good

Morgan County, Illinois · 0.2 S Cass CO Line · Structure no. 069050200000000

Built
2005
20 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
98 ft
1 main span
Daily traffic
1,900
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 78 over Little Indian CR is a prestressed concrete stringer/multi-beam or girder carrying Ill 78 over Little Indian CR in Morgan County, Illinois. It was built in 2005, so it is 20 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 1,900 vehicles a day, roughly 10% of them trucks, projected to reach 2,071 by 2046. The structure is 98 ft (30 m) long and 35 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesIll 78
CrossesLittle Indian CR
Location0.2 S Cass CO Line
RouteState Highway 78
CountyMorgan County
StateIllinois
Coordinates39.86955, -90.21671
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 inspectionOctober 2023
Inspection intervalevery 48 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.9 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length98 ft (30 m)
Longest span96 ft (29.2 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2023)
Projected traffic2,071 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 Ill 78 over Little Indian CR built?

It was built in 2005, making it 20 years old in 2025.

What condition is Ill 78 over Little Indian CR 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 October 2023.

How much traffic does Ill 78 over Little Indian CR carry?

About 1,900 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Ill 78 over Little Indian CR?

The structure is 98 ft (30 m) long with a longest span of 96 ft (29.2 m) and a deck 35 ft wide.

Who owns Ill 78 over Little Indian CR?

It is owned by the State Highway Agency.