US Bridges

Armour RD over Br Stillman Creek

Good

Ogle County, Illinois · 1.5 MI SE Stillman V · Structure no. 071504800000000

Built
1971
54 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
150
2017 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Armour RD over Br Stillman Creek is a concrete culvert carrying Armour RD over Br Stillman Creek in Ogle County, Illinois. It was built in 1971, so it is 54 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 150 vehicles a day, roughly 2% of them trucks, projected to reach 156 by 2046. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesArmour RD
CrossesBr Stillman Creek
Location1.5 MI SE Stillman V
RouteCounty Highway 0
Coordinates42.09071, -89.15324
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating23.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 15
Structure length31 ft (9.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2017)
Projected traffic156 by 2046
Trucks2%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Armour RD over Br Stillman Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Armour RD over Br Stillman 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 July 2023.

How much traffic does Armour RD over Br Stillman Creek carry?

About 150 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Armour RD over Br Stillman Creek?

The structure is 31 ft (9.4 m) long with a longest span of 10 ft (3 m).

Who owns Armour RD over Br Stillman Creek?

It is owned by the Town or Township Highway Agency.