US Bridges

Kehrs Mill RD E over Bonhomme CR

Fair

St. Louis County, Missouri · S 7 T 45 N R 4 E · Structure no. 34144

Built
2012
13 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
127 ft
3 main spans
Daily traffic
18,432
2024 count
Owner
State
State Highway Agency

About this bridge

Kehrs Mill RD E over Bonhomme CR is a prestressed concrete continuous stringer/multi-beam or girder carrying Kehrs Mill RD E over Bonhomme CR in St. Louis County, Missouri. It was built in 2012, so it is 13 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.

It carries about 18,432 vehicles a day, roughly 10% of them trucks, projected to reach 25,805 by 2044. The structure is 127 ft (38.6 m) long and 90 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesKehrs Mill RD E
CrossesBonhomme CR
LocationS 7 T 45 N R 4 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.65799, -90.61858
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating100.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length127 ft (38.6 m)
Longest span44 ft (13.4 m)
Deck width90 ft (27.4 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,432 (2024)
Projected traffic25,805 by 2044
Trucks10%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kehrs Mill RD E over Bonhomme CR built?

It was built in 2012, making it 13 years old in 2025.

What condition is Kehrs Mill RD E over 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 July 2024.

How much traffic does Kehrs Mill RD E over Bonhomme CR carry?

About 18,432 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Kehrs Mill RD E over Bonhomme CR?

The structure is 127 ft (38.6 m) long with a longest span of 44 ft (13.4 m) and a deck 90 ft wide.

Who owns Kehrs Mill RD E over Bonhomme CR?

It is owned by the State Highway Agency.