US Bridges

Ill 34 over Stream E of Benton

Fair

Franklin County, Illinois · 2.6 MI E Benton · Structure no. 028004500000000

Built
1957
68 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
89 ft
3 main spans
Daily traffic
3,650
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 34 over Stream E of Benton is a concrete continuous slab carrying Ill 34 over Stream E of Benton in Franklin County, Illinois. It was built in 1957, so it is 68 years old, older 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 5 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 3,650 vehicles a day, roughly 10% of them trucks, projected to reach 3,838 by 2046. The structure is 89 ft (27.1 m) long and 34 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesIll 34
CrossesStream E of Benton
Location2.6 MI E Benton
RouteState Highway 34
CountyFranklin County
StateIllinois
Coordinates37.98189, -88.85911
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length89 ft (27.1 m)
Longest span33 ft (10 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,650 (2023)
Projected traffic3,838 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 34 over Stream E of Benton built?

It was built in 1957, making it 68 years old in 2025.

What condition is Ill 34 over Stream E of Benton 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 October 2023.

How much traffic does Ill 34 over Stream E of Benton carry?

About 3,650 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Ill 34 over Stream E of Benton?

The structure is 89 ft (27.1 m) long with a longest span of 33 ft (10 m) and a deck 34 ft wide.

Who owns Ill 34 over Stream E of Benton?

It is owned by the State Highway Agency.