US Bridges

TR 20/OLD Trenton over Branch Sugar Creek

Fair

Clinton County, Illinois · 2 MI N Trenton · Structure no. 014303800000000

Built
1919
106 years old
Condition
Fair
inspected January 2025
Type
Other
Concrete
Length
44 ft
1 main span
Daily traffic
100
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 20/OLD Trenton over Branch Sugar Creek is a concrete other carrying TR 20/OLD Trenton over Branch Sugar Creek in Clinton County, Illinois. It was built in 1919, so it is 106 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 100 vehicles a day, roughly 11% of them trucks, projected to reach 110 by 2046. The structure is 44 ft (13.4 m) long and 19 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTR 20/OLD Trenton
CrossesBranch Sugar Creek
Location2 MI N Trenton
RouteCounty Highway 0
CountyClinton County
StateIllinois
Coordinates38.64461, -89.67633
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating40 US tons
Inventory rating23.9 US tons

Structure

Structure typeOther
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length44 ft (13.4 m)
Longest span40 ft (12.2 m)
Deck width19 ft (5.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic110 by 2046
Trucks11%
Lanes on structure1
Traffic directionOne-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$45,000
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 20/OLD Trenton over Branch Sugar Creek built?

It was built in 1919, making it 106 years old in 2025.

What condition is TR 20/OLD Trenton over Branch Sugar Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.

How much traffic does TR 20/OLD Trenton over Branch Sugar Creek carry?

About 100 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is TR 20/OLD Trenton over Branch Sugar Creek?

The structure is 44 ft (13.4 m) long with a longest span of 40 ft (12.2 m) and a deck 19 ft wide.

Who owns TR 20/OLD Trenton over Branch Sugar Creek?

It is owned by the Town or Township Highway Agency.