US Bridges

Parkwood DR over Mill CR

Good

Washington County, Missouri · S 2134 T 37 N R 3 E · Structure no. 17553

Built
1998
27 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
46 ft
3 main spans
Daily traffic
50
2024 count
Owner
County
County Highway Agency

About this bridge

Parkwood DR over Mill CR is a concrete continuous slab carrying Parkwood DR over Mill CR in Washington 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 60 by 2044. The structure is 46 ft (14 m) long and 17 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesParkwood DR
CrossesMill CR
LocationS 2134 T 37 N R 3 E
RouteCounty Highway 156
Coordinates37.9344, -90.7318
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating77.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length46 ft (14 m)
Longest span15 ft (4.6 m)
Deck width17 ft (5.2 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic60 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Parkwood DR over Mill CR built?

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

What condition is Parkwood DR over Mill CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does Parkwood DR over Mill CR carry?

About 50 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Parkwood DR over Mill CR?

The structure is 46 ft (14 m) long with a longest span of 15 ft (4.6 m) and a deck 17 ft wide.

Who owns Parkwood DR over Mill CR?

It is owned by the County Highway Agency.