US Bridges

TR 169A over Minnow Slough

Good

Crawford County, Illinois · 1 Mi. E Palastine · Structure no. 017332600000000

Built
2017
8 years old
Condition
Good
inspected October 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
34 ft
1 main span
Daily traffic
25
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 169A over Minnow Slough is a aluminum, wrought iron, or cast iron culvert carrying TR 169A over Minnow Slough in Crawford County, Illinois. It was built in 2017, so it is 8 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 25 vehicles a day, roughly 4% of them trucks, projected to reach 25 by 2046. The structure is 34 ft (10.3 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesTR 169A
CrossesMinnow Slough
Location1 Mi. E Palastine
RouteCounty Highway 0
CountyCrawford County
StateIllinois
Coordinates39.00635, -87.58391
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length34 ft (10.3 m)
Longest span34 ft (10.3 m)
Deck width22 ft (6.7 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2020)
Projected traffic25 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-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 169A over Minnow Slough built?

It was built in 2017, making it 8 years old in 2025.

What condition is TR 169A 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 169A over Minnow Slough carry?

About 25 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is TR 169A over Minnow Slough?

The structure is 34 ft (10.3 m) long with a longest span of 34 ft (10.3 m) and a deck 22 ft wide.

Who owns TR 169A over Minnow Slough?

It is owned by the Town or Township Highway Agency.