US Bridges

Market ST over Pedestrian Tunnel

Good

St. Louis city, Missouri · S 940 T 45 N R 7 E · Structure no. 36710

Built
2021
4 years old
Condition
Good
inspected March 2024
Type
Frame
Concrete
Length
110 ft
1 main span
Daily traffic
19,390
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Market ST over Pedestrian Tunnel is a concrete frame carrying Market ST over Pedestrian Tunnel in St. Louis city, Missouri. It was built in 2021, so it is 4 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 19,390 vehicles a day, roughly 5% of them trucks, projected to reach 26,177 by 2044. The structure is 110 ft (33.5 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesMarket ST
CrossesPedestrian Tunnel
LocationS 940 T 45 N R 7 E
RouteCity Street 0
CountySt. Louis city
StateMissouri
Coordinates38.63028, -90.21139
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
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length110 ft (33.5 m)
Longest span30 ft (9.1 m)
Deck width34 ft (10.5 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,390 (2024)
Projected traffic26,177 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed0.6 mi (1 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 Market ST over Pedestrian Tunnel built?

It was built in 2021, making it 4 years old in 2025.

What condition is Market ST over Pedestrian Tunnel 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 2024.

How much traffic does Market ST over Pedestrian Tunnel carry?

About 19,390 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Market ST over Pedestrian Tunnel?

The structure is 110 ft (33.5 m) long with a longest span of 30 ft (9.1 m) and a deck 34 ft wide.

Who owns Market ST over Pedestrian Tunnel?

It is owned by the City or Municipal Highway Agency.