US Bridges

CO RD 43 over Tomahawk Creek

Fair

LaSalle County, Illinois · E 8th N 3740 · Structure no. 050340200000000

Built
1933
92 years old, rebuilt 1985
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
38 ft
1 main span
Daily traffic
500
2020 count
Owner
County
County Highway Agency

About this bridge

CO RD 43 over Tomahawk Creek is a concrete slab carrying CO RD 43 over Tomahawk Creek in LaSalle County, Illinois. It was built in 1933 and reconstructed in 1985, so it is 92 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 500 vehicles a day, roughly 26% of them trucks, projected to reach 505 by 2046. The structure is 38 ft (11.6 m) long and 30 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCO RD 43
CrossesTomahawk Creek
LocationE 8th N 3740
RouteCounty Highway 0
CountyLaSalle County
StateIllinois
Coordinates41.47474, -89.01187
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.4 US tons
Inventory rating45.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length38 ft (11.6 m)
Longest span38 ft (11.6 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2020)
Projected traffic505 by 2046
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 CO RD 43 over Tomahawk Creek built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1985.

What condition is CO RD 43 over Tomahawk 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 April 2023.

How much traffic does CO RD 43 over Tomahawk Creek carry?

About 500 vehicles per day (2020 count), of which roughly 26% are trucks.

How long is CO RD 43 over Tomahawk Creek?

The structure is 38 ft (11.6 m) long with a longest span of 38 ft (11.6 m) and a deck 30 ft wide.

Who owns CO RD 43 over Tomahawk Creek?

It is owned by the County Highway Agency.