US Bridges

CH-11 (fas 2462) over Mackinaw River

Fair

Tazewell County, Illinois · SE-12-T23NR5W · Structure no. 090302900000000

Built
1967
58 years old, rebuilt 2016
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
453 ft
4 main spans
Daily traffic
1,400
2023 count
Owner
County
County Highway Agency

About this bridge

CH-11 (fas 2462) over Mackinaw River is a steel continuous stringer/multi-beam or girder carrying CH-11 (fas 2462) over Mackinaw River in Tazewell County, Illinois. It was built in 1967 and reconstructed in 2016, so it is 58 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 1,400 vehicles a day, roughly 5% of them trucks, projected to reach 1,364 by 2046. The structure is 453 ft (138.2 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCH-11 (fas 2462)
CrossesMackinaw River
LocationSE-12-T23NR5W
RouteCounty Highway 0
CountyTazewell County
StateIllinois
Coordinates40.45448, -89.60621
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length453 ft (138.2 m)
Longest span126 ft (38.4 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2023)
Projected traffic1,364 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CH-11 (fas 2462) over Mackinaw River built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2016.

What condition is CH-11 (fas 2462) over Mackinaw River 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 December 2024.

How much traffic does CH-11 (fas 2462) over Mackinaw River carry?

About 1,400 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is CH-11 (fas 2462) over Mackinaw River?

The structure is 453 ft (138.2 m) long with a longest span of 126 ft (38.4 m) and a deck 30 ft wide.

Who owns CH-11 (fas 2462) over Mackinaw River?

It is owned by the County Highway Agency.