US Bridges

FAU 7406 (tr 217) over Trib Big Creek

Poor

Macon County, Illinois · 1 MI E Mt Zion · Structure no. 058504500000000

Built
2005
20 years old
Condition
Poor
inspected January 2024
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
23 ft
1 main span
Daily traffic
1,800
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

FAU 7406 (tr 217) over Trib Big Creek is a aluminum, wrought iron, or cast iron culvert carrying FAU 7406 (tr 217) over Trib Big Creek in Macon County, Illinois. It was built in 2005, so it is 20 years old, younger 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 1,800 vehicles a day, roughly 2% of them trucks, projected to reach 1,818 by 2046. The structure is 23 ft (7 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFAU 7406 (tr 217)
CrossesTrib Big Creek
Location1 MI E Mt Zion
CountyMacon County
StateIllinois
Coordinates39.78116, -88.85847
Functional classUrban Collector

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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width27 ft (8.2 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2020)
Projected traffic1,818 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 FAU 7406 (tr 217) over Trib Big Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is FAU 7406 (tr 217) over Trib Big Creek 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 January 2024.

How much traffic does FAU 7406 (tr 217) over Trib Big Creek carry?

About 1,800 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is FAU 7406 (tr 217) over Trib Big Creek?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 27 ft wide.

Who owns FAU 7406 (tr 217) over Trib Big Creek?

It is owned by the Town or Township Highway Agency.