US Bridges

Co. Line Rd. over Cedar Creek

Fair

Knox County, Illinois · NW-19-T11NR1E · Structure no. 048600400000000

Built
1995
30 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
89 ft
3 main spans
Daily traffic
75
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Co. Line Rd. over Cedar Creek is a prestressed concrete box beam or girders - multiple carrying Co. Line Rd. over Cedar Creek in Knox County, Illinois. It was built in 1995, so it is 30 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 75 vehicles a day, roughly 25% of them trucks, projected to reach 76 by 2046. The structure is 89 ft (27.1 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCo. Line Rd.
CrossesCedar Creek
LocationNW-19-T11NR1E
CountyKnox County
StateIllinois
Coordinates40.92822, -90.44112
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length89 ft (27.1 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic76 by 2046
Trucks25%
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 Co. Line Rd. over Cedar Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is Co. Line Rd. over Cedar 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 2024.

How much traffic does Co. Line Rd. over Cedar Creek carry?

About 75 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is Co. Line Rd. over Cedar Creek?

The structure is 89 ft (27.1 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns Co. Line Rd. over Cedar Creek?

It is owned by the City or Municipal Highway Agency.