US Bridges

Il 159 over Mooney Creek

Fair

Madison County, Illinois · Just N. of Il 143 · Structure no. 060013000000000

Built
1937
88 years old, rebuilt 1983
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
169 ft
3 main spans
Daily traffic
6,550
2023 count
Owner
State
State Highway Agency

About this bridge

Il 159 over Mooney Creek is a steel continuous stringer/multi-beam or girder carrying Il 159 over Mooney Creek in Madison County, Illinois. It was built in 1937 and reconstructed in 1983, so it is 88 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 6,550 vehicles a day, roughly 3% of them trucks, projected to reach 7,116 by 2046. The structure is 169 ft (51.5 m) long and 35 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesIl 159
CrossesMooney Creek
LocationJust N. of Il 143
RouteState Highway 159
CountyMadison County
StateIllinois
Coordinates38.82467, -89.97236
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.8 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length169 ft (51.5 m)
Longest span66 ft (20.1 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,550 (2023)
Projected traffic7,116 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 159 over Mooney Creek built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1983.

What condition is Il 159 over Mooney 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 April 2023.

How much traffic does Il 159 over Mooney Creek carry?

About 6,550 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Il 159 over Mooney Creek?

The structure is 169 ft (51.5 m) long with a longest span of 66 ft (20.1 m) and a deck 35 ft wide.

Who owns Il 159 over Mooney Creek?

It is owned by the State Highway Agency.