US Bridges

Ch 13 over Plum Creek

Fair

Scott County, Illinois · 1.5 MI Ssw Exeter · Structure no. 086301100000000

Built
1977
48 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
125
2020 count
Owner
County
County Highway Agency

About this bridge

Ch 13 over Plum Creek is a prestressed concrete box beam or girders - multiple carrying Ch 13 over Plum Creek in Scott County, Illinois. It was built in 1977, so it is 48 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 125 vehicles a day, roughly 26% of them trucks, projected to reach 126 by 2046. The structure is 68 ft (20.7 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCh 13
CrossesPlum Creek
Location1.5 MI Ssw Exeter
RouteCounty Highway 0
CountyScott County
StateIllinois
Coordinates39.69539, -90.5094
Functional classRural Minor 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
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 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 alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span66 ft (20.1 m)
Deck width25 ft (7.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2020)
Projected traffic126 by 2046
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 13 over Plum Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Ch 13 over Plum 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 September 2023.

How much traffic does Ch 13 over Plum Creek carry?

About 125 vehicles per day (2020 count), of which roughly 26% are trucks.

How long is Ch 13 over Plum Creek?

The structure is 68 ft (20.7 m) long with a longest span of 66 ft (20.1 m) and a deck 25 ft wide.

Who owns Ch 13 over Plum Creek?

It is owned by the County Highway Agency.