US Bridges

Il 4-FAP 686 over Rattlesnake Creek

Fair

Jackson County, Illinois · 4.3 MI W Il 13/127 · Structure no. 039006800000000

Built
2004
21 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
146 ft
3 main spans
Daily traffic
1,150
2023 count
Owner
State
State Highway Agency

About this bridge

Il 4-FAP 686 over Rattlesnake Creek is a steel continuous stringer/multi-beam or girder carrying Il 4-FAP 686 over Rattlesnake Creek in Jackson County, Illinois. It was built in 2004, so it is 21 years old, younger 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 1,150 vehicles a day, roughly 21% of them trucks, projected to reach 1,263 by 2046. The structure is 146 ft (44.5 m) long and 36 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesIl 4-FAP 686
CrossesRattlesnake Creek
Location4.3 MI W Il 13/127
RouteState Highway 4
CountyJackson County
StateIllinois
Coordinates37.87819, -89.38578
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating63.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length146 ft (44.5 m)
Longest span49 ft (14.9 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,150 (2023)
Projected traffic1,263 by 2046
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 4-FAP 686 over Rattlesnake Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Il 4-FAP 686 over Rattlesnake 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 March 2024.

How much traffic does Il 4-FAP 686 over Rattlesnake Creek carry?

About 1,150 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is Il 4-FAP 686 over Rattlesnake Creek?

The structure is 146 ft (44.5 m) long with a longest span of 49 ft (14.9 m) and a deck 36 ft wide.

Who owns Il 4-FAP 686 over Rattlesnake Creek?

It is owned by the State Highway Agency.