US Bridges

Ill 104 over Mauvaise Terre Br

Fair

Morgan County, Illinois · 1MI S Bus I72/IL104 · Structure no. 069002000000000

Built
1933
92 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
2,000
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 104 over Mauvaise Terre Br is a concrete slab carrying Ill 104 over Mauvaise Terre Br in Morgan County, Illinois. It was built in 1933, so it is 92 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 2,000 vehicles a day, roughly 14% of them trucks, projected to reach 2,778 by 2046. The structure is 32 ft (9.8 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIll 104
CrossesMauvaise Terre Br
Location1MI S Bus I72/IL104
RouteState Highway 104
CountyMorgan County
StateIllinois
Coordinates39.71347, -90.18531
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating50.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width43 ft (13.1 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2023)
Projected traffic2,778 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Ill 104 over Mauvaise Terre Br built?

It was built in 1933, making it 92 years old in 2025.

What condition is Ill 104 over Mauvaise Terre Br 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 2024.

How much traffic does Ill 104 over Mauvaise Terre Br carry?

About 2,000 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is Ill 104 over Mauvaise Terre Br?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 43 ft wide.

Who owns Ill 104 over Mauvaise Terre Br?

It is owned by the State Highway Agency.