US Bridges

Madison ST W over Is 70 Rv 70

Fair

St. Louis city, Missouri · S 11 T 45 N R 7 E · Structure no. 118

Built
1958
67 years old, rebuilt 2009
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
177 ft
3 main spans
Daily traffic
1,240
2024 count
Owner
State
State Highway Agency

About this bridge

Madison ST W over Is 70 Rv 70 is a prestressed concrete continuous box beam or girders - multiple carrying Madison ST W over Is 70 Rv 70 in St. Louis city, Missouri. It was built in 1958 and reconstructed in 2009, so it is 67 years old, older 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 5 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 1,240 vehicles a day, roughly 11% of them trucks, projected to reach 1,860 by 2044. The structure is 177 ft (53.9 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMadison ST W
CrossesIs 70 Rv 70
LocationS 11 T 45 N R 7 E
RouteCity Street 0
CountySt. Louis city
StateMissouri
Coordinates38.64699, -90.191
Functional classUrban Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating47.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length177 ft (53.9 m)
Longest span63 ft (19.1 m)
Deck width44 ft (13.5 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,240 (2024)
Projected traffic1,860 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Madison ST W over Is 70 Rv 70 built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2009.

What condition is Madison ST W over Is 70 Rv 70 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 Madison ST W over Is 70 Rv 70 carry?

About 1,240 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Madison ST W over Is 70 Rv 70?

The structure is 177 ft (53.9 m) long with a longest span of 63 ft (19.1 m) and a deck 44 ft wide.

Who owns Madison ST W over Is 70 Rv 70?

It is owned by the State Highway Agency.