US Bridges

FAP 320(IL 121) over Stream

Good

Moultrie County, Illinois · E Edge of Sullivan · Structure no. 070201300000000

Built
1995
30 years old
Condition
Good
inspected March 2021
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
5,750
2023 count
Owner
State
State Highway Agency

About this bridge

FAP 320(IL 121) over Stream is a concrete culvert carrying FAP 320(IL 121) over Stream in Moultrie County, Illinois. It was built in 1995, so it is 30 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,750 vehicles a day, roughly 11% of them trucks, projected to reach 6,668 by 2046. The structure is 33 ft (10.1 m) long and 54 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFAP 320(IL 121)
CrossesStream
LocationE Edge of Sullivan
RouteState Highway 121
CountyMoultrie County
StateIllinois
Coordinates39.60083, -88.58973
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
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionMarch 2021
Inspection intervalevery 48 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 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 typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width54 ft (16.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,750 (2023)
Projected traffic6,668 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 FAP 320(IL 121) over Stream built?

It was built in 1995, making it 30 years old in 2025.

What condition is FAP 320(IL 121) over Stream 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 March 2021.

How much traffic does FAP 320(IL 121) over Stream carry?

About 5,750 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is FAP 320(IL 121) over Stream?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m) and a deck 54 ft wide.

Who owns FAP 320(IL 121) over Stream?

It is owned by the State Highway Agency.