US Bridges

Hamborg Road over Stonebridge Trail

Poor

Winnebago County, Illinois · 0.25 M E of I-90 · Structure no. 101307200000000

Built
1981
44 years old
Condition
Poor
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
143 ft
3 main spans
Daily traffic
1,100
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Hamborg Road over Stonebridge Trail is a prestressed concrete box beam or girders - multiple carrying Hamborg Road over Stonebridge Trail in Winnebago 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,100 vehicles a day, roughly 3% of them trucks, projected to reach 1,061 by 2046. The structure is 143 ft (43.7 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesHamborg Road
CrossesStonebridge Trail
Location0.25 M E of I-90
CountyWinnebago County
StateIllinois
Coordinates42.40982, -88.97895
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating49.3 US tons
Inventory rating29.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length143 ft (43.7 m)
Longest span53 ft (16.2 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2022)
Projected traffic1,061 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed3.7 mi (6 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 Hamborg Road over Stonebridge Trail built?

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

What condition is Hamborg Road over Stonebridge Trail in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does Hamborg Road over Stonebridge Trail carry?

About 1,100 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Hamborg Road over Stonebridge Trail?

The structure is 143 ft (43.7 m) long with a longest span of 53 ft (16.2 m) and a deck 28 ft wide.

Who owns Hamborg Road over Stonebridge Trail?

It is owned by the Town or Township Highway Agency.