US Bridges

FAP-821 (IL-15) over Stream

Good

Jefferson County, Illinois · .5 MI W Markam City · Structure no. 041201400000000

Built
1993
32 years old
Condition
Good
inspected January 2023
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
3,500
2023 count
Owner
State
State Highway Agency

About this bridge

FAP-821 (IL-15) over Stream is a concrete continuous culvert carrying FAP-821 (IL-15) over Stream in Jefferson County, Illinois. It was built in 1993, so it is 32 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 3,500 vehicles a day, roughly 11% of them trucks, projected to reach 3,434 by 2046. The structure is 31 ft (9.3 m) long. If it were closed, the detour would be 47.2 mi (76 km).

Location

Open in Google Maps
CarriesFAP-821 (IL-15)
CrossesStream
Location.5 MI W Markam City
RouteState Highway 15
CountyJefferson County
StateIllinois
Coordinates38.34295, -88.73382
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 inspectionJanuary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.3 m)
Longest span15 ft (4.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2023)
Projected traffic3,434 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.2 mi (76 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-821 (IL-15) over Stream built?

It was built in 1993, making it 32 years old in 2025.

What condition is FAP-821 (IL-15) 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 January 2023.

How much traffic does FAP-821 (IL-15) over Stream carry?

About 3,500 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is FAP-821 (IL-15) over Stream?

The structure is 31 ft (9.3 m) long with a longest span of 15 ft (4.5 m).

Who owns FAP-821 (IL-15) over Stream?

It is owned by the State Highway Agency.