US Bridges

FAS 1481-CH 7 over Mackinaw River

Fair

Tazewell County, Illinois · N.CTR-3-T23NR3W · Structure no. 090301000000000

Built
1962
63 years old, rebuilt 1996
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
475 ft
5 main spans
Daily traffic
1,650
2023 count
Owner
County
County Highway Agency

About this bridge

FAS 1481-CH 7 over Mackinaw River is a steel stringer/multi-beam or girder carrying FAS 1481-CH 7 over Mackinaw River in Tazewell County, Illinois. It was built in 1962 and reconstructed in 1996, so it is 63 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 1,650 vehicles a day, roughly 14% of them trucks, projected to reach 1,364 by 2046. The structure is 475 ft (144.8 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFAS 1481-CH 7
CrossesMackinaw River
LocationN.CTR-3-T23NR3W
RouteCounty Highway 0
CountyTazewell County
StateIllinois
Coordinates40.48252, -89.42899
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy9: Superior to present desirable 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
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length475 ft (144.8 m)
Longest span114 ft (34.7 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,650 (2023)
Projected traffic1,364 by 2046
Trucks14%
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 1481-CH 7 over Mackinaw River built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1996.

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 2025.

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

About 1,650 vehicles per day (2023 count), of which roughly 14% are trucks.

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

The structure is 475 ft (144.8 m) long with a longest span of 114 ft (34.7 m) and a deck 28 ft wide.

Who owns FAS 1481-CH 7 over Mackinaw River?

It is owned by the County Highway Agency.