US Bridges

TR 184 over Drowning Fork

Good

Warren County, Illinois · NW-33-T8NR1W · Structure no. 094402100000000

Built
2008
17 years old
Condition
Good
inspected January 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
150
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 184 over Drowning Fork is a prestressed concrete box beam or girders - multiple carrying TR 184 over Drowning Fork in Warren County, Illinois. It was built in 2008, so it is 17 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 150 vehicles a day, roughly 11% of them trucks, projected to reach 152 by 2046. The structure is 41 ft (12.6 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesTR 184
CrossesDrowning Fork
LocationNW-33-T8NR1W
RouteCounty Highway 0
Coordinates40.6394, -90.5225
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJanuary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length41 ft (12.6 m)
Longest span40 ft (12.2 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2021)
Projected traffic152 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 184 over Drowning Fork built?

It was built in 2008, making it 17 years old in 2025.

What condition is TR 184 over Drowning Fork 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 2022.

How much traffic does TR 184 over Drowning Fork carry?

About 150 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is TR 184 over Drowning Fork?

The structure is 41 ft (12.6 m) long with a longest span of 40 ft (12.2 m) and a deck 28 ft wide.

Who owns TR 184 over Drowning Fork?

It is owned by the Town or Township Highway Agency.