US Bridges

Il 78 over Green River

Fair

Henry County, Illinois · 2.0 MI S Hoopole RD · Structure no. 037012900000000

Built
1981
44 years old, rebuilt 2008
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
143 ft
3 main spans
Daily traffic
1,300
2023 count
Owner
State
State Highway Agency

About this bridge

Il 78 over Green River is a prestressed concrete box beam or girders - multiple carrying Il 78 over Green River in Henry County, Illinois. It was built in 1981 and reconstructed in 2008, so it is 44 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,300 vehicles a day, roughly 26% of them trucks, projected to reach 1,296 by 2046. The structure is 143 ft (43.5 m) long and 32 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesIl 78
CrossesGreen River
Location2.0 MI S Hoopole RD
RouteState Highway 78
CountyHenry County
StateIllinois
Coordinates41.48637, -89.91007
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum 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 rating77.8 US tons
Inventory rating46.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length143 ft (43.5 m)
Longest span63 ft (19.1 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2023)
Projected traffic1,296 by 2046
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 Green River built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 2008.

What condition is Il 78 over Green River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does Il 78 over Green River carry?

About 1,300 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is Il 78 over Green River?

The structure is 143 ft (43.5 m) long with a longest span of 63 ft (19.1 m) and a deck 32 ft wide.

Who owns Il 78 over Green River?

It is owned by the State Highway Agency.