US Bridges

TR 99 over Felky Slough

Fair

Livingston County, Illinois · 2405 E 2200 N · Structure no. 053321700000000

Built
1960
65 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
100
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 99 over Felky Slough is a steel stringer/multi-beam or girder carrying TR 99 over Felky Slough in Livingston County, Illinois. It was built in 1960, so it is 65 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 32% of them trucks, projected to reach 101 by 2046. The structure is 24 ft (7.4 m) long and 24 ft wide.

Location

Open in Google Maps
CarriesTR 99
CrossesFelky Slough
Location2405 E 2200 N
RouteCounty Highway 0
CountyLivingston County
StateIllinois
Coordinates40.94836, -88.46998
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
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 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 rating35.7 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length24 ft (7.4 m)
Longest span24 ft (7.2 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic101 by 2046
Trucks32%
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 99 over Felky Slough built?

It was built in 1960, making it 65 years old in 2025.

What condition is TR 99 over Felky Slough 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 October 2024.

How much traffic does TR 99 over Felky Slough carry?

About 100 vehicles per day (2023 count), of which roughly 32% are trucks.

How long is TR 99 over Felky Slough?

The structure is 24 ft (7.4 m) long with a longest span of 24 ft (7.2 m) and a deck 24 ft wide.

Who owns TR 99 over Felky Slough?

It is owned by the Town or Township Highway Agency.