US Bridges

Browns Mill Road over Stream

Good

Stephenson County, Illinois · .98 MI So Ill RTE 20 · Structure no. 089323700000000

Built
1981
44 years old
Condition
Good
inspected December 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
100
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Browns Mill Road over Stream is a prestressed concrete box beam or girders - multiple carrying Browns Mill Road over Stream in Stephenson County, Illinois. It was built in 1981, so it is 44 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 6% of them trucks, projected to reach 101 by 2046. The structure is 45 ft (13.7 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBrowns Mill Road
CrossesStream
Location.98 MI So Ill RTE 20
RouteCounty Highway 0
Coordinates42.26182, -89.52296
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum 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 length45 ft (13.7 m)
Longest span43 ft (13.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic101 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Browns Mill Road over Stream built?

It was built in 1981, making it 44 years old in 2025.

What condition is Browns Mill Road over Stream 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 December 2022.

How much traffic does Browns Mill Road over Stream carry?

About 100 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Browns Mill Road over Stream?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13.1 m) and a deck 24 ft wide.

Who owns Browns Mill Road over Stream?

It is owned by the Town or Township Highway Agency.