US Bridges

Il 121 (fap 320) over Stream

Good

Macon County, Illinois · 2 MI NW Dalton City · Structure no. 058201100000000

Built
2007
18 years old
Condition
Good
inspected June 2021
Type
Culvert
Concrete
Length
31 ft
2 main spans
Daily traffic
3,950
2023 count
Owner
State
State Highway Agency

About this bridge

Il 121 (fap 320) over Stream is a concrete culvert carrying Il 121 (fap 320) over Stream in Macon County, Illinois. It was built in 2007, so it is 18 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 3,950 vehicles a day, roughly 9% of them trucks, projected to reach 4,798 by 2046. The structure is 31 ft (9.5 m) long.

Location

Open in Google Maps
CarriesIl 121 (fap 320)
CrossesStream
Location2 MI NW Dalton City
RouteState Highway 121
CountyMacon County
StateIllinois
Coordinates39.74153, -88.83846
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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.5 m)
Longest span14 ft (4.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,950 (2023)
Projected traffic4,798 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 121 (fap 320) over Stream built?

It was built in 2007, making it 18 years old in 2025.

What condition is Il 121 (fap 320) 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 June 2021.

How much traffic does Il 121 (fap 320) over Stream carry?

About 3,950 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Il 121 (fap 320) over Stream?

The structure is 31 ft (9.5 m) long with a longest span of 14 ft (4.4 m).

Who owns Il 121 (fap 320) over Stream?

It is owned by the State Highway Agency.