US Bridges

US 20 and Il 84 over Galena Riv and Icgrr

Fair

Jo Daviess County, Illinois · In Galena · Structure no. 043004300000000

Built
1984
41 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
632 ft
7 main spans
Daily traffic
8,250
2021 count
Owner
State
State Highway Agency

About this bridge

US 20 and Il 84 over Galena Riv and Icgrr is a prestressed concrete continuous stringer/multi-beam or girder carrying US 20 and Il 84 over Galena Riv and Icgrr in Jo Daviess County, Illinois. It was built in 1984, so it is 41 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 5 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 8,250 vehicles a day, roughly 12% of them trucks, projected to reach 8,333 by 2046. The structure is 632 ft (192.6 m) long and 41 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

Open in Google Maps
CarriesUS 20 and Il 84
CrossesGalena Riv and Icgrr
LocationIn Galena
RouteU.S. Route 20
CountyJo Daviess County
StateIllinois
Coordinates42.41061, -90.43111
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.1 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans7 (+2 approach)
Design loadHS 20
Structure length632 ft (192.6 m)
Longest span113 ft (34.4 m)
Deck width41 ft (12.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,250 (2021)
Projected traffic8,333 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed60.3 mi (97 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 20 and Il 84 over Galena Riv and Icgrr built?

It was built in 1984, making it 41 years old in 2025.

What condition is US 20 and Il 84 over Galena Riv and Icgrr 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 October 2024.

How much traffic does US 20 and Il 84 over Galena Riv and Icgrr carry?

About 8,250 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is US 20 and Il 84 over Galena Riv and Icgrr?

The structure is 632 ft (192.6 m) long with a longest span of 113 ft (34.4 m) and a deck 41 ft wide.

Who owns US 20 and Il 84 over Galena Riv and Icgrr?

It is owned by the State Highway Agency.