US Bridges

Ch 5 over Mill Creek

Fair

Adams County, Illinois · 4 MI East of Qcy · Structure no. 001330000000000

Built
1905
120 years old, rebuilt 1976
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
193 ft
3 main spans
Daily traffic
900
2024 count
Owner
County
County Highway Agency

About this bridge

Ch 5 over Mill Creek is a steel continuous stringer/multi-beam or girder carrying Ch 5 over Mill Creek in Adams County, Illinois. It was built in 1905 and reconstructed in 1976, so it is 120 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 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 900 vehicles a day, roughly 4% of them trucks, projected to reach 960 by 2046. The structure is 193 ft (58.8 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesCh 5
CrossesMill Creek
Location4 MI East of Qcy
RouteCounty Highway 0
Coordinates39.91573, -91.28395
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length193 ft (58.8 m)
Longest span71 ft (21.6 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2024)
Projected traffic960 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 5 over Mill Creek built?

It was built in 1905, making it 120 years old in 2025. It was reconstructed in 1976.

What condition is Ch 5 over Mill 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 2024.

How much traffic does Ch 5 over Mill Creek carry?

About 900 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Ch 5 over Mill Creek?

The structure is 193 ft (58.8 m) long with a longest span of 71 ft (21.6 m) and a deck 30 ft wide.

Who owns Ch 5 over Mill Creek?

It is owned by the County Highway Agency.