US Bridges

Is 70 E over Cst Branch ST

Fair

St. Louis city, Missouri · S 14 T 46 N R 2 E · Structure no. 12013

Built
1999
26 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
152 ft
3 main spans
Daily traffic
113,474
2024 count
Owner
State
State Highway Agency

About this bridge

Is 70 E over Cst Branch ST is a concrete continuous slab carrying Is 70 E over Cst Branch ST in St. Louis city, Missouri. It was built in 1999, so it is 26 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 113,474 vehicles a day, roughly 18% of them trucks, projected to reach 141,843 by 2044. The structure is 152 ft (46.3 m) long and 159 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 70 E
CrossesCst Branch ST
LocationS 14 T 46 N R 2 E
RouteInterstate 70
CountySt. Louis city
StateMissouri
Coordinates38.65558, -90.19526
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.4 US tons
Inventory rating43.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length152 ft (46.3 m)
Longest span65 ft (19.8 m)
Deck width159 ft (48.4 m)
Roadway width152 ft (46.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic113,474 (2024)
Projected traffic141,843 by 2044
Trucks18%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 70 E over Cst Branch ST built?

It was built in 1999, making it 26 years old in 2025.

What condition is Is 70 E over Cst Branch ST 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 2023.

How much traffic does Is 70 E over Cst Branch ST carry?

About 113,474 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Is 70 E over Cst Branch ST?

The structure is 152 ft (46.3 m) long with a longest span of 65 ft (19.8 m) and a deck 159 ft wide.

Who owns Is 70 E over Cst Branch ST?

It is owned by the State Highway Agency.