US Bridges

FAP 75(IL 29) over Flatt Branch

Good

Christian County, Illinois · 0.60 MI S Il 48 · Structure no. 011051500000000

Built
2023
2 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
214 ft
3 main spans
Daily traffic
6,400
2023 count
Owner
State
State Highway Agency

About this bridge

FAP 75(IL 29) over Flatt Branch is a steel continuous stringer/multi-beam or girder carrying FAP 75(IL 29) over Flatt Branch in Christian County, Illinois. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,400 vehicles a day, roughly 7% of them trucks, projected to reach 7,323 by 2046. The structure is 214 ft (65.3 m) long and 43 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesFAP 75(IL 29)
CrossesFlatt Branch
Location0.60 MI S Il 48
RouteState Highway 29
CountyChristian County
StateIllinois
Coordinates39.54511, -89.26646
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length214 ft (65.3 m)
Longest span93 ft (28.2 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,400 (2023)
Projected traffic7,323 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 FAP 75(IL 29) over Flatt Branch built?

It was built in 2023, making it 2 years old in 2025.

What condition is FAP 75(IL 29) over Flatt Branch 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 October 2023.

How much traffic does FAP 75(IL 29) over Flatt Branch carry?

About 6,400 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is FAP 75(IL 29) over Flatt Branch?

The structure is 214 ft (65.3 m) long with a longest span of 93 ft (28.2 m) and a deck 43 ft wide.

Who owns FAP 75(IL 29) over Flatt Branch?

It is owned by the State Highway Agency.