US Bridges

W Corbett Road over Branch of Carroll Ck

Fair

Carroll County, Illinois · 1 M NW Mt Carroll · Structure no. 008311300000000

Built
1927
98 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
22 ft
1 main span
Daily traffic
150
2021 count
Owner
County
County Highway Agency

About this bridge

W Corbett Road over Branch of Carroll Ck is a concrete slab carrying W Corbett Road over Branch of Carroll Ck in Carroll County, Illinois. It was built in 1927, so it is 98 years old, older 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 150 vehicles a day, roughly 13% of them trucks, projected to reach 152 by 2046. The structure is 22 ft (6.7 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesW Corbett Road
CrossesBranch of Carroll Ck
Location1 M NW Mt Carroll
RouteCounty Highway 0
CountyCarroll County
StateIllinois
Coordinates42.1107, -89.9955
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2021)
Projected traffic152 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 W Corbett Road over Branch of Carroll Ck built?

It was built in 1927, making it 98 years old in 2025.

What condition is W Corbett Road over Branch of Carroll Ck 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 May 2024.

How much traffic does W Corbett Road over Branch of Carroll Ck carry?

About 150 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is W Corbett Road over Branch of Carroll Ck?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 26 ft wide.

Who owns W Corbett Road over Branch of Carroll Ck?

It is owned by the County Highway Agency.