US Bridges

Flagg RD over Branch Kyte River

Good

Ogle County, Illinois · 4.0 MI N Ashton · Structure no. 071501000000000

Built
1956
69 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
1,150
2022 count
Owner
County
County Highway Agency

About this bridge

Flagg RD over Branch Kyte River is a concrete culvert carrying Flagg RD over Branch Kyte River in Ogle County, Illinois. It was built in 1956, so it is 69 years old, older 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 1,150 vehicles a day, roughly 11% of them trucks, projected to reach 1,664 by 2046. The structure is 24 ft (7.2 m) long. If it were closed, the detour would be 16.8 mi (27 km).

CarriesFlagg RD
CrossesBranch Kyte River
Location4.0 MI N Ashton
RouteCounty Highway 0
Coordinates41.93191, -89.22374
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.1 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length24 ft (7.2 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,150 (2022)
Projected traffic1,664 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 Flagg RD over Branch Kyte River built?

It was built in 1956, making it 69 years old in 2025.

What condition is Flagg RD over Branch Kyte River 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 July 2023.

How much traffic does Flagg RD over Branch Kyte River carry?

About 1,150 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Flagg RD over Branch Kyte River?

The structure is 24 ft (7.2 m) long with a longest span of 11 ft (3.4 m).

Who owns Flagg RD over Branch Kyte River?

It is owned by the County Highway Agency.