US Bridges

US 45 over Mccorkle Creek

Fair

Johnson County, Illinois · 0.3 MI S of Ill 146 · Structure no. 044000500000000

Built
1924
101 years old, rebuilt 1981
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
2,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 45 over Mccorkle Creek is a prestressed concrete box beam or girders - multiple carrying US 45 over Mccorkle Creek in Johnson County, Illinois. It was built in 1924 and reconstructed in 1981, so it is 101 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 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 2,000 vehicles a day, roughly 9% of them trucks, projected to reach 2,205 by 2046. The structure is 26 ft (7.9 m) long and 33 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

Open in Google Maps
CarriesUS 45
CrossesMccorkle Creek
Location0.3 MI S of Ill 146
RouteU.S. Route 45
CountyJohnson County
StateIllinois
Coordinates37.41229, -88.89315
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 protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating48.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span25 ft (7.7 m)
Deck width33 ft (10.1 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2023)
Projected traffic2,205 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed36 mi (58 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 US 45 over Mccorkle Creek built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1981.

What condition is US 45 over Mccorkle Creek 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 March 2024.

How much traffic does US 45 over Mccorkle Creek carry?

About 2,000 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is US 45 over Mccorkle Creek?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.7 m) and a deck 33 ft wide.

Who owns US 45 over Mccorkle Creek?

It is owned by the State Highway Agency.