US Bridges

Patterson RD over New Halls Ferry CR

FairPosted for load

St. Louis County, Missouri · S 11 T 47 N R 6 E · Structure no. 15536

Built
1998
27 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
69 ft
1 main span
Daily traffic
19,702
2024 count
Owner
County
County Highway Agency

About this bridge

Patterson RD over New Halls Ferry CR is a steel stringer/multi-beam or girder carrying Patterson RD over New Halls Ferry CR in St. Louis County, Missouri. It was built in 1998, so it is 27 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. Its operating status is: posted for load restriction.

It carries about 19,702 vehicles a day, roughly 3% of them trucks, projected to reach 26,598 by 2044. The structure is 69 ft (21 m) long and 65 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPatterson RD
CrossesNew Halls Ferry CR
LocationS 11 T 47 N R 6 E
RouteCounty Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.82538, -90.31176
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating63.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length69 ft (21 m)
Longest span67 ft (20.4 m)
Deck width65 ft (19.7 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,702 (2024)
Projected traffic26,598 by 2044
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Patterson RD over New Halls Ferry CR built?

It was built in 1998, making it 27 years old in 2025.

What condition is Patterson RD over New Halls Ferry 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 Patterson RD over New Halls Ferry CR carry?

About 19,702 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Patterson RD over New Halls Ferry CR?

The structure is 69 ft (21 m) long with a longest span of 67 ft (20.4 m) and a deck 65 ft wide.

Who owns Patterson RD over New Halls Ferry CR?

It is owned by the County Highway Agency.