US Bridges

US 40 over Bnsfrr

Good

Bond County, Illinois · At Smithboro · Structure no. 003001800000000

Built
1942
83 years old, rebuilt 1988
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
277 ft
5 main spans
Daily traffic
1,450
2023 count
Owner
State
State Highway Agency

About this bridge

US 40 over Bnsfrr is a steel continuous stringer/multi-beam or girder carrying US 40 over Bnsfrr in Bond County, Illinois. It was built in 1942 and reconstructed in 1988, so it is 83 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,450 vehicles a day, roughly 8% of them trucks, projected to reach 1,768 by 2046. The structure is 277 ft (84.3 m) long and 35 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesUS 40
CrossesBnsfrr
LocationAt Smithboro
RouteU.S. Route 40
Coordinates38.89628, -89.34412
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.1 US tons
Inventory rating57.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length277 ft (84.3 m)
Longest span60 ft (18.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,450 (2023)
Projected traffic1,768 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 40 over Bnsfrr built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1988.

What condition is US 40 over Bnsfrr in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does US 40 over Bnsfrr carry?

About 1,450 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is US 40 over Bnsfrr?

The structure is 277 ft (84.3 m) long with a longest span of 60 ft (18.3 m) and a deck 35 ft wide.

Who owns US 40 over Bnsfrr?

It is owned by the State Highway Agency.