US Bridges

FAS 464-CH 1 over Mackinaw River

Fair

Tazewell County, Illinois · NW COR-14-T23NR4W · Structure no. 090300400000000

Built
1949
76 years old, rebuilt 1992
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
430 ft
5 main spans
Daily traffic
1,550
2023 count
Owner
County
County Highway Agency

About this bridge

FAS 464-CH 1 over Mackinaw River is a steel continuous stringer/multi-beam or girder carrying FAS 464-CH 1 over Mackinaw River in Tazewell County, Illinois. It was built in 1949 and reconstructed in 1992, so it is 76 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 1,550 vehicles a day, roughly 5% of them trucks, projected to reach 1,667 by 2046. The structure is 430 ft (131 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFAS 464-CH 1
CrossesMackinaw River
LocationNW COR-14-T23NR4W
RouteCounty Highway 0
CountyTazewell County
StateIllinois
Coordinates40.45066, -89.53041
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.3 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length430 ft (131 m)
Longest span93 ft (28.2 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,550 (2023)
Projected traffic1,667 by 2046
Trucks5%
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 464-CH 1 over Mackinaw River built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1992.

What condition is FAS 464-CH 1 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 FAS 464-CH 1 over Mackinaw River carry?

About 1,550 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is FAS 464-CH 1 over Mackinaw River?

The structure is 430 ft (131 m) long with a longest span of 93 ft (28.2 m) and a deck 31 ft wide.

Who owns FAS 464-CH 1 over Mackinaw River?

It is owned by the County Highway Agency.