US Bridges

Il 4 (fap 662) over Sugar Creek

Good

Sangamon County, Illinois · Thayer 3.3M S Il 104 · Structure no. 084050800000000

Built
2002
23 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
115 ft
1 main span
Daily traffic
6,000
2023 count
Owner
State
State Highway Agency

About this bridge

Il 4 (fap 662) over Sugar Creek is a steel stringer/multi-beam or girder carrying Il 4 (fap 662) over Sugar Creek in Sangamon County, Illinois. It was built in 2002, so it is 23 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 6,000 vehicles a day, roughly 7% of them trucks, projected to reach 6,161 by 2046. The structure is 115 ft (35 m) long and 43 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesIl 4 (fap 662)
CrossesSugar Creek
LocationThayer 3.3M S Il 104
RouteState Highway 4
CountySangamon County
StateIllinois
Coordinates39.54075, -89.76528
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
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 rating56.8 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length115 ft (35 m)
Longest span112 ft (34.2 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2023)
Projected traffic6,161 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Il 4 (fap 662) over Sugar Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is Il 4 (fap 662) over Sugar Creek 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 December 2024.

How much traffic does Il 4 (fap 662) over Sugar Creek carry?

About 6,000 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Il 4 (fap 662) over Sugar Creek?

The structure is 115 ft (35 m) long with a longest span of 112 ft (34.2 m) and a deck 43 ft wide.

Who owns Il 4 (fap 662) over Sugar Creek?

It is owned by the State Highway Agency.