US Bridges

Grand Ave over Gratiot ST

Good

St. Louis city, Missouri · S 35 T 45 N R 6 E · Structure no. 33407

Built
2011
14 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
30,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Grand Ave over Gratiot ST is a prestressed concrete stringer/multi-beam or girder carrying Grand Ave over Gratiot ST in St. Louis city, 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 30,000 vehicles a day, roughly 8% of them trucks, projected to reach 40,500 by 2043. The structure is 62 ft (19 m) long and 96 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesGrand Ave
CrossesGratiot ST
LocationS 35 T 45 N R 6 E
RouteCity Street 0
CountySt. Louis city
StateMissouri
Coordinates38.62823, -90.23594
Functional classUrban Other Principal Arterial

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.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.6 US tons
Inventory rating37.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length62 ft (19 m)
Longest span60 ft (18.3 m)
Deck width96 ft (29.3 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,000 (2023)
Projected traffic40,500 by 2043
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Grand Ave over Gratiot ST built?

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

What condition is Grand Ave over Gratiot ST 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 March 2023.

How much traffic does Grand Ave over Gratiot ST carry?

About 30,000 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Grand Ave over Gratiot ST?

The structure is 62 ft (19 m) long with a longest span of 60 ft (18.3 m) and a deck 96 ft wide.

Who owns Grand Ave over Gratiot ST?

It is owned by the City or Municipal Highway Agency.