US Bridges

Il 94 over Rock Creek

Good

Hancock County, Illinois · 5.7M N US136 Carthag · Structure no. 034050100000000

Built
2000
25 years old
Condition
Good
inspected October 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
95 ft
1 main span
Daily traffic
2,000
2023 count
Owner
State
State Highway Agency

About this bridge

Il 94 over Rock Creek is a steel stringer/multi-beam or girder carrying Il 94 over Rock Creek in Hancock County, Illinois. It was built in 2000, so it is 25 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 2,000 vehicles a day, roughly 15% of them trucks, projected to reach 1,667 by 2046. The structure is 95 ft (29 m) long and 40 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesIl 94
CrossesRock Creek
Location5.7M N US136 Carthag
RouteState Highway 94
Coordinates40.49729, -91.1388
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating75.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length95 ft (29 m)
Longest span93 ft (28.2 m)
Deck width40 ft (12.1 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2023)
Projected traffic1,667 by 2046
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 94 over Rock Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is Il 94 over Rock 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 October 2022.

How much traffic does Il 94 over Rock Creek carry?

About 2,000 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Il 94 over Rock Creek?

The structure is 95 ft (29 m) long with a longest span of 93 ft (28.2 m) and a deck 40 ft wide.

Who owns Il 94 over Rock Creek?

It is owned by the State Highway Agency.