US Bridges

Il 161 - FAP 805 over FAI-57

Poor

Marion County, Illinois · 8 MI E of Centralia · Structure no. 061001700000000

Built
1968
57 years old
Condition
Poor
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
234 ft
4 main spans
Daily traffic
3,900
2023 count
Owner
State
State Highway Agency

About this bridge

Il 161 - FAP 805 over FAI-57 is a steel continuous stringer/multi-beam or girder carrying Il 161 - FAP 805 over FAI-57 in Marion County, Illinois. It was built in 1968, so it is 57 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 3,900 vehicles a day, roughly 9% of them trucks, projected to reach 5,202 by 2046. The structure is 234 ft (71.3 m) long and 58 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesIl 161 - FAP 805
CrossesFAI-57
Location8 MI E of Centralia
RouteState Highway 161
CountyMarion County
StateIllinois
Coordinates38.51994, -88.96179
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length234 ft (71.3 m)
Longest span72 ft (21.8 m)
Deck width58 ft (17.7 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,900 (2023)
Projected traffic5,202 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Il 161 - FAP 805 over FAI-57 built?

It was built in 1968, making it 57 years old in 2025.

What condition is Il 161 - FAP 805 over FAI-57 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does Il 161 - FAP 805 over FAI-57 carry?

About 3,900 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Il 161 - FAP 805 over FAI-57?

The structure is 234 ft (71.3 m) long with a longest span of 72 ft (21.8 m) and a deck 58 ft wide.

Who owns Il 161 - FAP 805 over FAI-57?

It is owned by the State Highway Agency.