US Bridges

Is 64 E over UP RR Bonhomme CR

FairPosted for load

St. Louis County, Missouri · S 2031 T 45 N R 4 E · Structure no. 3785

Built
1987
38 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
286 ft
4 main spans
Daily traffic
48,369
2024 count
Owner
State
State Highway Agency

About this bridge

Is 64 E over UP RR Bonhomme CR is a steel continuous stringer/multi-beam or girder carrying Is 64 E over UP RR Bonhomme CR in St. Louis County, Missouri. It was built in 1987, so it is 38 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 48,369 vehicles a day, roughly 11% of them trucks, projected to reach 60,461 by 2044. The structure is 286 ft (87.2 m) long and 53 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 64 E
CrossesUP RR Bonhomme CR
LocationS 2031 T 45 N R 4 E
RouteInterstate 64
CountySt. Louis County
StateMissouri
Coordinates38.66491, -90.57323
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.6 US tons
Inventory rating33.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length286 ft (87.2 m)
Longest span98 ft (29.9 m)
Deck width53 ft (16.3 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,369 (2024)
Projected traffic60,461 by 2044
Trucks11%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Is 64 E over UP RR Bonhomme CR built?

It was built in 1987, making it 38 years old in 2025.

What condition is Is 64 E over UP RR Bonhomme CR 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 October 2024.

How much traffic does Is 64 E over UP RR Bonhomme CR carry?

About 48,369 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Is 64 E over UP RR Bonhomme CR?

The structure is 286 ft (87.2 m) long with a longest span of 98 ft (29.9 m) and a deck 53 ft wide.

Who owns Is 64 E over UP RR Bonhomme CR?

It is owned by the State Highway Agency.