US Bridges

FAS-461 (CH-16) over Mackinaw River

Good

Tazewell County, Illinois · SW-13-T24NR6W · Structure no. 090324800000000

Built
2017
8 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
736 ft
6 main spans
Daily traffic
3,750
2023 count
Owner
County
County Highway Agency

About this bridge

FAS-461 (CH-16) over Mackinaw River is a steel continuous stringer/multi-beam or girder carrying FAS-461 (CH-16) over Mackinaw River in Tazewell County, Illinois. It was built in 2017, so it is 8 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 3,750 vehicles a day, roughly 10% of them trucks, projected to reach 3,788 by 2046. The structure is 736 ft (224.3 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFAS-461 (CH-16)
CrossesMackinaw River
LocationSW-13-T24NR6W
RouteCounty Highway 0
CountyTazewell County
StateIllinois
Coordinates40.52631, -89.72996
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length736 ft (224.3 m)
Longest span150 ft (45.7 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,750 (2023)
Projected traffic3,788 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 FAS-461 (CH-16) over Mackinaw River built?

It was built in 2017, making it 8 years old in 2025.

What condition is FAS-461 (CH-16) over Mackinaw River 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 September 2023.

How much traffic does FAS-461 (CH-16) over Mackinaw River carry?

About 3,750 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is FAS-461 (CH-16) over Mackinaw River?

The structure is 736 ft (224.3 m) long with a longest span of 150 ft (45.7 m) and a deck 39 ft wide.

Who owns FAS-461 (CH-16) over Mackinaw River?

It is owned by the County Highway Agency.