US Bridges

Ashby RD over Coldwater CR

Good

St. Louis County, Missouri · S 1024 T 46 N R 6 E · Structure no. 33147

Built
2011
14 years old
Condition
Good
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
89 ft
1 main span
Daily traffic
1,800
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ashby RD over Coldwater CR is a prestressed concrete box beam or girders - multiple carrying Ashby RD over Coldwater CR in St. Louis County, Missouri. It was built in 2011, so it is 14 years old, younger than the Missouri average of 45.1 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 1,800 vehicles a day, roughly 1% of them trucks, projected to reach 2,430 by 2043. The structure is 89 ft (27.2 m) long and 48 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesAshby RD
CrossesColdwater CR
LocationS 1024 T 46 N R 6 E
RouteCity Street 382
CountySt. Louis County
StateMissouri
Coordinates38.73631, -90.38268
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.5 US tons
Inventory rating36.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length89 ft (27.2 m)
Longest span86 ft (26.1 m)
Deck width48 ft (14.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2023)
Projected traffic2,430 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Ashby RD over Coldwater CR built?

It was built in 2011, making it 14 years old in 2025.

What condition is Ashby RD over Coldwater CR 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 December 2023.

How much traffic does Ashby RD over Coldwater CR carry?

About 1,800 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Ashby RD over Coldwater CR?

The structure is 89 ft (27.2 m) long with a longest span of 86 ft (26.1 m) and a deck 48 ft wide.

Who owns Ashby RD over Coldwater CR?

It is owned by the City or Municipal Highway Agency.