US Bridges

FAS 858 (roots Rd) over Kaskaskia River

Fair

Randolph County, Illinois · 0.6 MI E of Roots · Structure no. 079001900000000

Built
1960
65 years old, rebuilt 2015
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,332 ft
9 main spans
Daily traffic
425
2024 count
Owner
State
State Highway Agency

About this bridge

FAS 858 (roots Rd) over Kaskaskia River is a steel continuous stringer/multi-beam or girder carrying FAS 858 (roots Rd) over Kaskaskia River in Randolph County, Illinois. It was built in 1960 and reconstructed in 2015, so it is 65 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 425 vehicles a day, roughly 19% of them trucks, projected to reach 379 by 2046. The structure is 1,332 ft (405.9 m) long and 34 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesFAS 858 (roots Rd)
CrossesKaskaskia River
Location0.6 MI E of Roots
RouteCounty Highway 0
CountyRandolph County
StateIllinois
Coordinates38.01671, -89.95947
Functional classRural Major Collector

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 inspectionNovember 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 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 rating61.4 US tons
Inventory rating36.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans9 (+2 approach)
Design loadHS 20
Structure length1,332 ft (405.9 m)
Longest span150 ft (45.7 m)
Deck width34 ft (10.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2024)
Projected traffic379 by 2046
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 FAS 858 (roots Rd) over Kaskaskia River built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2015.

What condition is FAS 858 (roots Rd) over Kaskaskia River 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 November 2023.

How much traffic does FAS 858 (roots Rd) over Kaskaskia River carry?

About 425 vehicles per day (2024 count), of which roughly 19% are trucks.

How long is FAS 858 (roots Rd) over Kaskaskia River?

The structure is 1,332 ft (405.9 m) long with a longest span of 150 ft (45.7 m) and a deck 34 ft wide.

Who owns FAS 858 (roots Rd) over Kaskaskia River?

It is owned by the State Highway Agency.