US Bridges

Shannon RTE over Middle Creek

Fair

Carroll County, Illinois · 3 Mi. S. US52/IL64 · Structure no. 008391500000000

Built
1998
27 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
64 ft
1 main span
Daily traffic
175
2016 count
Owner
County
County Highway Agency

About this bridge

Shannon RTE over Middle Creek is a steel stringer/multi-beam or girder carrying Shannon RTE over Middle Creek in Carroll County, Illinois. It was built in 1998, so it is 27 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 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 175 vehicles a day, roughly 13% of them trucks, projected to reach 177 by 2046. The structure is 64 ft (19.5 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesShannon RTE
CrossesMiddle Creek
Location3 Mi. S. US52/IL64
RouteCounty Highway 0
CountyCarroll County
StateIllinois
Coordinates42.05447, -89.74386
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
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 typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span61 ft (18.6 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2016)
Projected traffic177 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Shannon RTE over Middle Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is Shannon RTE over Middle 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 May 2023.

How much traffic does Shannon RTE over Middle Creek carry?

About 175 vehicles per day (2016 count), of which roughly 13% are trucks.

How long is Shannon RTE over Middle Creek?

The structure is 64 ft (19.5 m) long with a longest span of 61 ft (18.6 m) and a deck 30 ft wide.

Who owns Shannon RTE over Middle Creek?

It is owned by the County Highway Agency.