US Bridges

Old Alton Edwrdsvl over Siu North Access RD

Fair

Madison County, Illinois · Old 159 1.5 M W Edwr · Structure no. 060016000000000

Built
1968
57 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
242 ft
4 main spans
Daily traffic
1,200
2023 count
Owner
State
State Highway Agency

About this bridge

Old Alton Edwrdsvl over Siu North Access RD is a steel continuous stringer/multi-beam or girder carrying Old Alton Edwrdsvl over Siu North Access RD in Madison County, Illinois. It was built in 1968, so it is 57 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 1,200 vehicles a day, roughly 3% of them trucks, projected to reach 1,338 by 2046. The structure is 242 ft (73.8 m) long and 30 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesOld Alton Edwrdsvl
CrossesSiu North Access RD
LocationOld 159 1.5 M W Edwr
RouteCounty Highway 0
Coordinates38.82757, -89.99444
Functional classUrban Local

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.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66.8 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length242 ft (73.8 m)
Longest span68 ft (20.6 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2023)
Projected traffic1,338 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed13 mi (21 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Old Alton Edwrdsvl over Siu North Access RD built?

It was built in 1968, making it 57 years old in 2025.

What condition is Old Alton Edwrdsvl over Siu North Access RD 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 May 2024.

How much traffic does Old Alton Edwrdsvl over Siu North Access RD carry?

About 1,200 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Old Alton Edwrdsvl over Siu North Access RD?

The structure is 242 ft (73.8 m) long with a longest span of 68 ft (20.6 m) and a deck 30 ft wide.

Who owns Old Alton Edwrdsvl over Siu North Access RD?

It is owned by the State Highway Agency.