US Bridges

FAS 1481-CH 7 over Mackinaw River

Fair

Tazewell County, Illinois · NE-1-T23NR6W · Structure no. 090322900000000

Built
2003
22 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
418 ft
5 main spans
Daily traffic
1,150
2023 count
Owner
County
County Highway Agency

About this bridge

FAS 1481-CH 7 over Mackinaw River is a steel continuous stringer/multi-beam or girder carrying FAS 1481-CH 7 over Mackinaw River in Tazewell County, Illinois. It was built in 2003, so it is 22 years old, younger 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 1,150 vehicles a day, roughly 7% of them trucks, projected to reach 1,212 by 2046. The structure is 418 ft (127.5 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesFAS 1481-CH 7
CrossesMackinaw River
LocationNE-1-T23NR6W
RouteCounty Highway 0
CountyTazewell County
StateIllinois
Coordinates40.47907, -89.72724
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 protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length418 ft (127.5 m)
Longest span90 ft (27.4 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,150 (2023)
Projected traffic1,212 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 1481-CH 7 over Mackinaw River built?

It was built in 2003, making it 22 years old in 2025.

What condition is FAS 1481-CH 7 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 January 2024.

How much traffic does FAS 1481-CH 7 over Mackinaw River carry?

About 1,150 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is FAS 1481-CH 7 over Mackinaw River?

The structure is 418 ft (127.5 m) long with a longest span of 90 ft (27.4 m) and a deck 30 ft wide.

Who owns FAS 1481-CH 7 over Mackinaw River?

It is owned by the County Highway Agency.