US Bridges

Township Road No. over Smallpox Creek

Poor

Jo Daviess County, Illinois · 6 MI E Galena · Structure no. 043307400000000

Built
1957
68 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
42 ft
1 main span
Daily traffic
375
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Township Road No. over Smallpox Creek is a steel stringer/multi-beam or girder carrying Township Road No. over Smallpox Creek in Jo Daviess County, Illinois. It was built in 1957, so it is 68 years old, older 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 3 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 375 vehicles a day, roughly 27% of them trucks, projected to reach 379 by 2046. The structure is 42 ft (12.8 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesTownship Road No.
CrossesSmallpox Creek
Location6 MI E Galena
RouteCounty Highway 0
Coordinates42.41839, -90.3019
Functional classRural Local

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
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating30.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length42 ft (12.8 m)
Longest span42 ft (12.8 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic375 (2021)
Projected traffic379 by 2046
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$122,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Township Road No. over Smallpox Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Township Road No. over Smallpox Creek 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 March 2024.

How much traffic does Township Road No. over Smallpox Creek carry?

About 375 vehicles per day (2021 count), of which roughly 27% are trucks.

How long is Township Road No. over Smallpox Creek?

The structure is 42 ft (12.8 m) long with a longest span of 42 ft (12.8 m) and a deck 22 ft wide.

Who owns Township Road No. over Smallpox Creek?

It is owned by the Town or Township Highway Agency.