US Bridges

Mckelvey RD S over Is 270 Rp IS270E to I

Fair

St. Louis County, Missouri · S 729 T 46 N R 5 E · Structure no. 3149

Built
1979
46 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
395 ft
4 main spans
Daily traffic
12,192
2024 count
Owner
State
State Highway Agency

About this bridge

Mckelvey RD S over Is 270 Rp IS270E to I is a steel continuous stringer/multi-beam or girder carrying Mckelvey RD S over Is 270 Rp IS270E to I in St. Louis County, Missouri. It was built in 1979, so it is 46 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 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 12,192 vehicles a day, roughly 5% of them trucks, projected to reach 17,069 by 2044. The structure is 395 ft (120.4 m) long and 82 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMckelvey RD S
CrossesIs 270 Rp IS270E to I
LocationS 729 T 46 N R 5 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.74201, -90.44107
Functional classUrban Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
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 rating67.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length395 ft (120.4 m)
Longest span119 ft (36.3 m)
Deck width82 ft (25.1 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,192 (2024)
Projected traffic17,069 by 2044
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Mckelvey RD S over Is 270 Rp IS270E to I built?

It was built in 1979, making it 46 years old in 2025.

What condition is Mckelvey RD S over Is 270 Rp IS270E to I 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 September 2024.

How much traffic does Mckelvey RD S over Is 270 Rp IS270E to I carry?

About 12,192 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Mckelvey RD S over Is 270 Rp IS270E to I?

The structure is 395 ft (120.4 m) long with a longest span of 119 ft (36.3 m) and a deck 82 ft wide.

Who owns Mckelvey RD S over Is 270 Rp IS270E to I?

It is owned by the State Highway Agency.