US Bridges

N. Birkbeck Road over Galena River

Fair

Jo Daviess County, Illinois · 4.5 MI N of Galena · Structure no. 043324500000000

Built
1988
37 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
230 ft
3 main spans
Daily traffic
50
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

N. Birkbeck Road over Galena River is a prestressed concrete box beam or girders - multiple carrying N. Birkbeck Road over Galena River in Jo Daviess County, Illinois. It was built in 1988, so it is 37 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 50 vehicles a day, roughly 14% of them trucks, projected to reach 51 by 2046. The structure is 230 ft (70.1 m) long and 24 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesN. Birkbeck Road
CrossesGalena River
Location4.5 MI N of Galena
RouteCounty Highway 0
CountyJo Daviess County
StateIllinois
Coordinates42.49483, -90.3947
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length230 ft (70.1 m)
Longest span76 ft (23.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2021)
Projected traffic51 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 N. Birkbeck Road over Galena River built?

It was built in 1988, making it 37 years old in 2025.

What condition is N. Birkbeck Road over Galena River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does N. Birkbeck Road over Galena River carry?

About 50 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is N. Birkbeck Road over Galena River?

The structure is 230 ft (70.1 m) long with a longest span of 76 ft (23.2 m) and a deck 24 ft wide.

Who owns N. Birkbeck Road over Galena River?

It is owned by the Town or Township Highway Agency.