US Bridges

TR 163 over Minnow Slough

Good

Crawford County, Illinois · 1.5 MI NE Palestine · Structure no. 017332700000000

Built
2021
4 years old
Condition
Good
inspected October 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
32 ft
1 main span
Daily traffic
20
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 163 over Minnow Slough is a aluminum, wrought iron, or cast iron culvert carrying TR 163 over Minnow Slough in Crawford County, Illinois. It was built in 2021, so it is 4 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 20 vehicles a day, roughly 5% of them trucks, projected to reach 20 by 2046. The structure is 32 ft (9.9 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesTR 163
CrossesMinnow Slough
Location1.5 MI NE Palestine
RouteCounty Highway 0
CountyCrawford County
StateIllinois
Coordinates39.02108, -87.58333
Functional classRural Local

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.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 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 alignment7: Better than present minimum criteria
Operating rating76.1 US tons
Inventory rating58.5 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length32 ft (9.9 m)
Longest span32 ft (9.9 m)
Deck width0 ft (0 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic20 by 2046
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 TR 163 over Minnow Slough built?

It was built in 2021, making it 4 years old in 2025.

What condition is TR 163 over Minnow Slough 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 October 2023.

How much traffic does TR 163 over Minnow Slough carry?

About 20 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is TR 163 over Minnow Slough?

The structure is 32 ft (9.9 m) long with a longest span of 32 ft (9.9 m).

Who owns TR 163 over Minnow Slough?

It is owned by the Town or Township Highway Agency.