US Bridges

Carroll ST over Spring Creek

Fair

Macon County, Illinois · Between Mound Pershi · Structure no. 058323300000000

Built
1983
42 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
91 ft
3 main spans
Daily traffic
200
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Carroll ST over Spring Creek is a concrete continuous slab carrying Carroll ST over Spring Creek in Macon County, Illinois. It was built in 1983, so it is 42 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 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 200 vehicles a day, roughly 2% of them trucks, projected to reach 202 by 2046. The structure is 91 ft (27.7 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCarroll ST
CrossesSpring Creek
LocationBetween Mound Pershi
RouteCity Street 0
CountyMacon County
StateIllinois
Coordinates39.88609, -88.95165
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
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 alignment7: Better than present minimum criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length91 ft (27.7 m)
Longest span35 ft (10.7 m)
Deck width31 ft (9.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2020)
Projected traffic202 by 2046
Trucks2%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Carroll ST over Spring Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Carroll ST over Spring 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 July 2023.

How much traffic does Carroll ST over Spring Creek carry?

About 200 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Carroll ST over Spring Creek?

The structure is 91 ft (27.7 m) long with a longest span of 35 ft (10.7 m) and a deck 31 ft wide.

Who owns Carroll ST over Spring Creek?

It is owned by the City or Municipal Highway Agency.