US Bridges

FAS 556(CH 28) over Trib to Sangamon Riv

Fair

Macon County, Illinois · 3.7 MI NW Boody · Structure no. 058335800000000

Built
2003
22 years old
Condition
Fair
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
450
2020 count
Owner
County
County Highway Agency

About this bridge

FAS 556(CH 28) over Trib to Sangamon Riv is a prestressed concrete box beam or girders - multiple carrying FAS 556(CH 28) over Trib to Sangamon Riv in Macon 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 450 vehicles a day, roughly 8% of them trucks, projected to reach 455 by 2046. The structure is 65 ft (19.7 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFAS 556(CH 28)
CrossesTrib to Sangamon Riv
Location3.7 MI NW Boody
RouteCounty Highway 0
CountyMacon County
StateIllinois
Coordinates39.78691, -89.11387
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
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 typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length65 ft (19.7 m)
Longest span62 ft (18.9 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2020)
Projected traffic455 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 556(CH 28) over Trib to Sangamon Riv built?

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

What condition is FAS 556(CH 28) over Trib to Sangamon Riv 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 February 2025.

How much traffic does FAS 556(CH 28) over Trib to Sangamon Riv carry?

About 450 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is FAS 556(CH 28) over Trib to Sangamon Riv?

The structure is 65 ft (19.7 m) long with a longest span of 62 ft (18.9 m) and a deck 30 ft wide.

Who owns FAS 556(CH 28) over Trib to Sangamon Riv?

It is owned by the County Highway Agency.