US Bridges

Cs 0720 over Benton Lake

Good

Franklin County, Illinois · 0.1 MI E of Il 37 · Structure no. 028305700000000

Built
1900
125 years old, rebuilt 1974
Condition
Good
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
550
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cs 0720 over Benton Lake is a prestressed concrete box beam or girders - multiple carrying Cs 0720 over Benton Lake in Franklin County, Illinois. It was built in 1900 and reconstructed in 1974, so it is 125 years old, older 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 550 vehicles a day, roughly 13% of them trucks, projected to reach 455 by 2046. The structure is 31 ft (9.4 m) long and 23 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCs 0720
CrossesBenton Lake
Location0.1 MI E of Il 37
Coordinates38.05973, -88.91677
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating100.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+2 approach)
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span21 ft (6.4 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2024)
Projected traffic455 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Cs 0720 over Benton Lake built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1974.

What condition is Cs 0720 over Benton Lake 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 February 2024.

How much traffic does Cs 0720 over Benton Lake carry?

About 550 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Cs 0720 over Benton Lake?

The structure is 31 ft (9.4 m) long with a longest span of 21 ft (6.4 m) and a deck 23 ft wide.

Who owns Cs 0720 over Benton Lake?

It is owned by the City or Municipal Highway Agency.