US Bridges

FAS 561/CH 9PRIMM over Salt Ck

Fair

Logan County, Illinois · 5.75 MI S Lincoln · Structure no. 054304700000000

Built
1976
49 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
571 ft
8 main spans
Daily traffic
500
2022 count
Owner
County
County Highway Agency

About this bridge

FAS 561/CH 9PRIMM over Salt Ck is a steel continuous stringer/multi-beam or girder carrying FAS 561/CH 9PRIMM over Salt Ck in Logan County, Illinois. It was built in 1976, so it is 49 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 5 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 500 vehicles a day, roughly 14% of them trucks, projected to reach 473 by 2046. The structure is 571 ft (173.9 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesFAS 561/CH 9PRIMM
CrossesSalt Ck
Location5.75 MI S Lincoln
RouteCounty Highway 0
CountyLogan County
StateIllinois
Coordinates40.05482, -89.35321
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating82.5 US tons
Inventory rating49.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length571 ft (173.9 m)
Longest span87 ft (26.5 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2022)
Projected traffic473 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 FAS 561/CH 9PRIMM over Salt Ck built?

It was built in 1976, making it 49 years old in 2025.

What condition is FAS 561/CH 9PRIMM over Salt Ck 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 January 2024.

How much traffic does FAS 561/CH 9PRIMM over Salt Ck carry?

About 500 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is FAS 561/CH 9PRIMM over Salt Ck?

The structure is 571 ft (173.9 m) long with a longest span of 87 ft (26.5 m) and a deck 30 ft wide.

Who owns FAS 561/CH 9PRIMM over Salt Ck?

It is owned by the County Highway Agency.