US Bridges

N Galena ST over Carroll Creek

Fair

Carroll County, Illinois · NW Edge of Mt Carrol · Structure no. 008610300000000

Built
2018
7 years old
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
97 ft
1 main span
Daily traffic
300
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

N Galena ST over Carroll Creek is a prestressed concrete box beam or girders - multiple carrying N Galena ST over Carroll Creek in Carroll County, Illinois. It was built in 2018, so it is 7 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 300 vehicles a day, roughly 13% of them trucks, projected to reach 303 by 2046. The structure is 97 ft (29.6 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesN Galena ST
CrossesCarroll Creek
LocationNW Edge of Mt Carrol
RouteCounty Highway 0
CountyCarroll County
StateIllinois
Coordinates42.10329, -89.98202
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating53.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length97 ft (29.6 m)
Longest span93 ft (28.3 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2021)
Projected traffic303 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Galena ST over Carroll Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is N Galena ST over Carroll Creek 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 November 2024.

How much traffic does N Galena ST over Carroll Creek carry?

About 300 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is N Galena ST over Carroll Creek?

The structure is 97 ft (29.6 m) long with a longest span of 93 ft (28.3 m) and a deck 32 ft wide.

Who owns N Galena ST over Carroll Creek?

It is owned by the City or Municipal Highway Agency.