US Bridges

NW 1001 over Monegaw CR

Good

St. Clair County, Missouri · S 1 T 38 N R 28 W · Structure no. 34409

Built
2013
12 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
20
2023 count
Owner
County
County Highway Agency

About this bridge

NW 1001 over Monegaw CR is a prestressed concrete stringer/multi-beam or girder carrying NW 1001 over Monegaw CR in St. Clair County, Missouri. It was built in 2013, so it is 12 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 24 by 2043. The structure is 85 ft (25.9 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesNW 1001
CrossesMonegaw CR
LocationS 1 T 38 N R 28 W
RouteCounty Highway 20
CountySt. Clair County
StateMissouri
Coordinates38.10102, -93.96092
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating49.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length85 ft (25.9 m)
Longest span81 ft (24.7 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic24 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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 NW 1001 over Monegaw CR built?

It was built in 2013, making it 12 years old in 2025.

What condition is NW 1001 over Monegaw 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 December 2023.

How much traffic does NW 1001 over Monegaw CR carry?

About 20 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NW 1001 over Monegaw CR?

The structure is 85 ft (25.9 m) long with a longest span of 81 ft (24.7 m) and a deck 23 ft wide.

Who owns NW 1001 over Monegaw CR?

It is owned by the County Highway Agency.