US Bridges

CH-7/FAS-579 over Indian Creek

Good

Morgan County, Illinois · .25MI S Arenzville · Structure no. 069320400000000

Built
1988
37 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
370 ft
3 main spans
Daily traffic
2,400
2024 count
Owner
County
County Highway Agency

About this bridge

CH-7/FAS-579 over Indian Creek is a steel continuous stringer/multi-beam or girder carrying CH-7/FAS-579 over Indian Creek in Morgan County, Illinois. It was built in 1988, so it is 37 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,400 vehicles a day, roughly 12% of them trucks, projected to reach 2,273 by 2046. The structure is 370 ft (112.7 m) long and 30 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCH-7/FAS-579
CrossesIndian Creek
Location.25MI S Arenzville
RouteCounty Highway 0
CountyMorgan County
StateIllinois
Coordinates39.87221, -90.36966
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.8 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length370 ft (112.7 m)
Longest span140 ft (42.7 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2024)
Projected traffic2,273 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CH-7/FAS-579 over Indian Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is CH-7/FAS-579 over Indian Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does CH-7/FAS-579 over Indian Creek carry?

About 2,400 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is CH-7/FAS-579 over Indian Creek?

The structure is 370 ft (112.7 m) long with a longest span of 140 ft (42.7 m) and a deck 30 ft wide.

Who owns CH-7/FAS-579 over Indian Creek?

It is owned by the County Highway Agency.