US Bridges

Olive Blvd over Hanley Hills CR

FairPosted for load

St. Louis County, Missouri · S 2 T 45 N R 6 E · Structure no. 15601

Built
1915
110 years old, rebuilt 1985
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
24 ft
1 main span
Daily traffic
11,723
2024 count
Owner
County
County Highway Agency

About this bridge

Olive Blvd over Hanley Hills CR is a prestressed concrete continuous box beam or girders - multiple carrying Olive Blvd over Hanley Hills CR in St. Louis County, Missouri. It was built in 1915 and reconstructed in 1985, so it is 110 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. Its operating status is: posted for load restriction.

It carries about 11,723 vehicles a day, roughly 15% of them trucks, projected to reach 15,826 by 2044. The structure is 24 ft (7.3 m) long and 48 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesOlive Blvd
CrossesHanley Hills CR
LocationS 2 T 45 N R 6 E
RouteCounty Highway 0
Coordinates38.66289, -90.30633
Functional classUrban Other Principal 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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width48 ft (14.6 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,723 (2024)
Projected traffic15,826 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Olive Blvd over Hanley Hills CR built?

It was built in 1915, making it 110 years old in 2025. It was reconstructed in 1985.

What condition is Olive Blvd over Hanley Hills CR 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 February 2024.

How much traffic does Olive Blvd over Hanley Hills CR carry?

About 11,723 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is Olive Blvd over Hanley Hills CR?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 48 ft wide.

Who owns Olive Blvd over Hanley Hills CR?

It is owned by the County Highway Agency.