US Bridges

Ill 34 over Trib to Gibbon Creek

Good

Pope County, Illinois · 1.1 MI S Saline CO · Structure no. 076200400000000

Built
1991
34 years old
Condition
Good
inspected January 2023
Type
Culvert
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
2,350
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 34 over Trib to Gibbon Creek is a concrete continuous culvert carrying Ill 34 over Trib to Gibbon Creek in Pope County, Illinois. It was built in 1991, so it is 34 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 2,350 vehicles a day, roughly 5% of them trucks, projected to reach 1,818 by 2046. The structure is 30 ft (9.1 m) long and 54 ft wide. If it were closed, the detour would be 42.3 mi (68 km).

CarriesIll 34
CrossesTrib to Gibbon Creek
Location1.1 MI S Saline CO
RouteState Highway 34
Coordinates37.58763, -88.44705
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 48 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 rating89.6 US tons
Inventory rating53.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span15 ft (4.5 m)
Deck width54 ft (16.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,350 (2023)
Projected traffic1,818 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.3 mi (68 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 Trib to Gibbon Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Ill 34 over Trib to Gibbon 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 January 2023.

How much traffic does Ill 34 over Trib to Gibbon Creek carry?

About 2,350 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Ill 34 over Trib to Gibbon Creek?

The structure is 30 ft (9.1 m) long with a longest span of 15 ft (4.5 m) and a deck 54 ft wide.

Who owns Ill 34 over Trib to Gibbon Creek?

It is owned by the State Highway Agency.