US Bridges

FAS 623 Ch 45 over Johns Creek

Good

Sangamon County, Illinois · 2.0 N of Lowder · Structure no. 084344900000000

Built
1985
40 years old
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
300
2022 count
Owner
County
County Highway Agency

About this bridge

FAS 623 Ch 45 over Johns Creek is a prestressed concrete box beam or girders - multiple carrying FAS 623 Ch 45 over Johns Creek in Sangamon County, Illinois. It was built in 1985, so it is 40 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 300 vehicles a day, roughly 23% of them trucks, projected to reach 530 by 2046. The structure is 58 ft (17.7 m) long and 40 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFAS 623 Ch 45
CrossesJohns Creek
Location2.0 N of Lowder
RouteCounty Highway 0
Coordinates39.5812, -89.84197
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span57 ft (17.4 m)
Deck width40 ft (12.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2022)
Projected traffic530 by 2046
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 FAS 623 Ch 45 over Johns Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is FAS 623 Ch 45 over Johns Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does FAS 623 Ch 45 over Johns Creek carry?

About 300 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is FAS 623 Ch 45 over Johns Creek?

The structure is 58 ft (17.7 m) long with a longest span of 57 ft (17.4 m) and a deck 40 ft wide.

Who owns FAS 623 Ch 45 over Johns Creek?

It is owned by the County Highway Agency.