US Bridges

Ill 17 over Senachwine CR Trib

Fair

Peoria County, Illinois · 4.6 MI E of Ill 40 · Structure no. 062001400000000

Built
1929
96 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
500
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 17 over Senachwine CR Trib is a concrete slab carrying Ill 17 over Senachwine CR Trib in Peoria County, Illinois. It was built in 1929, so it is 96 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 5 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 500 vehicles a day, roughly 18% of them trucks, projected to reach 1,111 by 2046. The structure is 28 ft (8.5 m) long and 43 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

Location

Open in Google Maps
CarriesIll 17
CrossesSenachwine CR Trib
Location4.6 MI E of Ill 40
RouteState Highway 17
CountyPeoria County
StateIllinois
Coordinates41.03166, -89.54308
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span27 ft (8.2 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic1,111 by 2046
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$114,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ill 17 over Senachwine CR Trib built?

It was built in 1929, making it 96 years old in 2025.

What condition is Ill 17 over Senachwine CR Trib 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 June 2024.

How much traffic does Ill 17 over Senachwine CR Trib carry?

About 500 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is Ill 17 over Senachwine CR Trib?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.2 m) and a deck 43 ft wide.

Who owns Ill 17 over Senachwine CR Trib?

It is owned by the State Highway Agency.