US Bridges

Baxter RD over Bonhomme CR

FairPosted for load

St. Louis County, Missouri · S 4 T 45 N R 4 E · Structure no. 15659

Built
1984
41 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
114 ft
3 main spans
Daily traffic
16,220
2024 count
Owner
County
County Highway Agency

About this bridge

Baxter RD over Bonhomme CR is a prestressed concrete continuous stringer/multi-beam or girder carrying Baxter RD over Bonhomme CR in St. Louis County, Missouri. It was built in 1984, so it is 41 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 16,220 vehicles a day, roughly 10% of them trucks, projected to reach 21,897 by 2044. The structure is 114 ft (34.7 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesBaxter RD
CrossesBonhomme CR
LocationS 4 T 45 N R 4 E
RouteCounty Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.66524, -90.57966
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50.6 US tons
Inventory rating32.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length114 ft (34.7 m)
Longest span51 ft (15.5 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,220 (2024)
Projected traffic21,897 by 2044
Trucks10%
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

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 Baxter RD over Bonhomme CR built?

It was built in 1984, making it 41 years old in 2025.

What condition is Baxter RD 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 March 2024.

How much traffic does Baxter RD over Bonhomme CR carry?

About 16,220 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Baxter RD over Bonhomme CR?

The structure is 114 ft (34.7 m) long with a longest span of 51 ft (15.5 m) and a deck 41 ft wide.

Who owns Baxter RD over Bonhomme CR?

It is owned by the County Highway Agency.