US Bridges

Bismarck RD(FAS497 over N Fork Verm River

Fair

Vermilion County, Illinois · 2 MI W of Bismarck · Structure no. 092017300000000

Built
1975
50 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
330 ft
4 main spans
Daily traffic
1,050
2024 count
Owner
State
State Highway Agency

About this bridge

Bismarck RD(FAS497 over N Fork Verm River is a steel continuous stringer/multi-beam or girder carrying Bismarck RD(FAS497 over N Fork Verm River in Vermilion County, Illinois. It was built in 1975, so it is 50 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 1,050 vehicles a day, roughly 8% of them trucks, projected to reach 732 by 2046. The structure is 330 ft (100.6 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesBismarck RD(FAS497
CrossesN Fork Verm River
Location2 MI W of Bismarck
RouteCounty Highway 0
CountyVermilion County
StateIllinois
Coordinates40.26573, -87.64271
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.3 US tons
Inventory rating47.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length330 ft (100.6 m)
Longest span91 ft (27.6 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,050 (2024)
Projected traffic732 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bismarck RD(FAS497 over N Fork Verm River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Bismarck RD(FAS497 over N Fork Verm River 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 February 2024.

How much traffic does Bismarck RD(FAS497 over N Fork Verm River carry?

About 1,050 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Bismarck RD(FAS497 over N Fork Verm River?

The structure is 330 ft (100.6 m) long with a longest span of 91 ft (27.6 m) and a deck 36 ft wide.

Who owns Bismarck RD(FAS497 over N Fork Verm River?

It is owned by the State Highway Agency.