US Bridges

Intermodal Dr. over Flagg Trib

Good

Ogle County, Illinois · SW Side of Rochelle · Structure no. 071601500000000

Built
2003
22 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete
Length
39 ft
1 main span
Daily traffic
450
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Intermodal Dr. over Flagg Trib is a concrete slab carrying Intermodal Dr. over Flagg Trib in Ogle County, Illinois. It was built in 2003, so it is 22 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 450 vehicles a day, roughly 11% of them trucks, projected to reach 936 by 2046. The structure is 39 ft (11.9 m) long and 35 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesIntermodal Dr.
CrossesFlagg Trib
LocationSW Side of Rochelle
RouteCity Street 0
Coordinates41.90526, -89.08118
Functional classUrban 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span37 ft (11.4 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2022)
Projected traffic936 by 2046
Trucks11%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Intermodal Dr. over Flagg Trib built?

It was built in 2003, making it 22 years old in 2025.

What condition is Intermodal Dr. over Flagg Trib 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 2024.

How much traffic does Intermodal Dr. over Flagg Trib carry?

About 450 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Intermodal Dr. over Flagg Trib?

The structure is 39 ft (11.9 m) long with a longest span of 37 ft (11.4 m) and a deck 35 ft wide.

Who owns Intermodal Dr. over Flagg Trib?

It is owned by the City or Municipal Highway Agency.