US Bridges

TR 184A/CREEK Road over Prairie Branch

Poor

Clinton County, Illinois · Lake-Brookside · Structure no. 014400200000000

Built
1974
51 years old
Condition
Poor
inspected January 2025
Type
Channel Beam
Concrete
Length
38 ft
1 main span
Daily traffic
75
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 184A/CREEK Road over Prairie Branch is a concrete channel beam carrying TR 184A/CREEK Road over Prairie Branch in Clinton County, Illinois. It was built in 1974, so it is 51 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 75 vehicles a day, roughly 8% of them trucks, projected to reach 83 by 2046. The structure is 38 ft (11.6 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesTR 184A/CREEK Road
CrossesPrairie Branch
LocationLake-Brookside
RouteCounty Highway 0
CountyClinton County
StateIllinois
Coordinates38.56021, -89.25419
Functional classRural Local

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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating23.6 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length38 ft (11.6 m)
Longest span37 ft (11.4 m)
Deck width23 ft (6.9 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2020)
Projected traffic83 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 184A/CREEK Road over Prairie Branch built?

It was built in 1974, making it 51 years old in 2025.

What condition is TR 184A/CREEK Road over Prairie Branch 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 2025.

How much traffic does TR 184A/CREEK Road over Prairie Branch carry?

About 75 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is TR 184A/CREEK Road over Prairie Branch?

The structure is 38 ft (11.6 m) long with a longest span of 37 ft (11.4 m) and a deck 23 ft wide.

Who owns TR 184A/CREEK Road over Prairie Branch?

It is owned by the Town or Township Highway Agency.