US Bridges

Il 104 over Fishhook Creek

Fair

Pike County, Illinois · .1M E Adams CO Line · Structure no. 075002800000000

Built
1975
50 years old, rebuilt 2004
Condition
Fair
inspected February 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
180 ft
3 main spans
Daily traffic
775
2023 count
Owner
State
State Highway Agency

About this bridge

Il 104 over Fishhook Creek is a prestressed concrete box beam or girders - multiple carrying Il 104 over Fishhook Creek in Pike County, Illinois. It was built in 1975 and reconstructed in 2004, so it is 50 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 775 vehicles a day, roughly 18% of them trucks, projected to reach 928 by 2046. The structure is 180 ft (54.9 m) long and 33 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesIl 104
CrossesFishhook Creek
Location.1M E Adams CO Line
RouteState Highway 104
CountyPike County
StateIllinois
Coordinates39.81174, -90.91531
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating42.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span63 ft (19.2 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic775 (2023)
Projected traffic928 by 2046
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Il 104 over Fishhook Creek built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2004.

What condition is Il 104 over Fishhook 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 February 2023.

How much traffic does Il 104 over Fishhook Creek carry?

About 775 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is Il 104 over Fishhook Creek?

The structure is 180 ft (54.9 m) long with a longest span of 63 ft (19.2 m) and a deck 33 ft wide.

Who owns Il 104 over Fishhook Creek?

It is owned by the State Highway Agency.