US Bridges

TR 17 S over Branch of Carlyle

Fair

Clinton County, Illinois · 1MI SW of Keysport · Structure no. 014405100000000

Built
2003
22 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
112 ft
3 main spans
Daily traffic
200
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 17 S over Branch of Carlyle is a prestressed concrete box beam or girders - multiple carrying TR 17 S over Branch of Carlyle in Clinton County, Illinois. It was built in 2003, so it is 22 years old, younger 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 200 vehicles a day, roughly 13% of them trucks, projected to reach 220 by 2046. The structure is 112 ft (34 m) long and 28 ft wide.

Location

Open in Google Maps
CarriesTR 17 S
CrossesBranch of Carlyle
Location1MI SW of Keysport
RouteCounty Highway 0
CountyClinton County
StateIllinois
Coordinates38.72744, -89.29874
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length112 ft (34 m)
Longest span50 ft (15.2 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2020)
Projected traffic220 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 17 S over Branch of Carlyle built?

It was built in 2003, making it 22 years old in 2025.

What condition is TR 17 S over Branch of Carlyle 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 September 2023.

How much traffic does TR 17 S over Branch of Carlyle carry?

About 200 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is TR 17 S over Branch of Carlyle?

The structure is 112 ft (34 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.

Who owns TR 17 S over Branch of Carlyle?

It is owned by the Town or Township Highway Agency.