US Bridges

Ill 104 over Lake Sangchris

Fair

Christian County, Illinois · .75 MI W Bulpitt · Structure no. 011002200000000

Built
1965
60 years old, rebuilt 1998
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
133 ft
2 main spans
Daily traffic
3,300
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 104 over Lake Sangchris is a prestressed concrete box beam or girders - multiple carrying Ill 104 over Lake Sangchris in Christian County, Illinois. It was built in 1965 and reconstructed in 1998, so it is 60 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 3,300 vehicles a day, roughly 11% of them trucks, projected to reach 2,677 by 2046. The structure is 133 ft (40.6 m) long and 36 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesIll 104
CrossesLake Sangchris
Location.75 MI W Bulpitt
RouteState Highway 104
CountyChristian County
StateIllinois
Coordinates39.59103, -89.44251
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.8 US tons
Inventory rating46.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length133 ft (40.6 m)
Longest span65 ft (19.7 m)
Deck width36 ft (11 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2023)
Projected traffic2,677 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$615,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ill 104 over Lake Sangchris built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1998.

What condition is Ill 104 over Lake Sangchris 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 March 2023.

How much traffic does Ill 104 over Lake Sangchris carry?

About 3,300 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Ill 104 over Lake Sangchris?

The structure is 133 ft (40.6 m) long with a longest span of 65 ft (19.7 m) and a deck 36 ft wide.

Who owns Ill 104 over Lake Sangchris?

It is owned by the State Highway Agency.