US Bridges

Rp IS64E to IS170W over Is 170 Cst S Brentwoo

Fair

St. Louis County, Missouri · S 21 T 45 N R 6 E · Structure no. 32232

Built
2008
17 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,385 ft
4 main spans
Daily traffic
18,123
2024 count
Owner
State
State Highway Agency

About this bridge

Rp IS64E to IS170W over Is 170 Cst S Brentwoo is a steel continuous stringer/multi-beam or girder carrying Rp IS64E to IS170W over Is 170 Cst S Brentwoo in St. Louis County, Missouri. It was built in 2008, so it is 17 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 18,123 vehicles a day, roughly 10% of them trucks, projected to reach 22,654 by 2044. The structure is 1,385 ft (422 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRp IS64E to IS170W
CrossesIs 170 Cst S Brentwoo
LocationS 21 T 45 N R 6 E
RouteState Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.62992, -90.34524
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 rating89.3 US tons
Inventory rating53.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+4 approach)
Design loadHS 25 or greater
Structure length1,385 ft (422 m)
Longest span249 ft (75.9 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,123 (2024)
Projected traffic22,654 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Rp IS64E to IS170W over Is 170 Cst S Brentwoo built?

It was built in 2008, making it 17 years old in 2025.

What condition is Rp IS64E to IS170W over Is 170 Cst S Brentwoo 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 April 2024.

How much traffic does Rp IS64E to IS170W over Is 170 Cst S Brentwoo carry?

About 18,123 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Rp IS64E to IS170W over Is 170 Cst S Brentwoo?

The structure is 1,385 ft (422 m) long with a longest span of 249 ft (75.9 m) and a deck 30 ft wide.

Who owns Rp IS64E to IS170W over Is 170 Cst S Brentwoo?

It is owned by the State Highway Agency.