US Bridges

County RD 2120 over Williams CR

Good

Lawrence County, Missouri · S 28 T 28 N R 26 W · Structure no. 22901

Built
1920
105 years old, rebuilt 2005
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 2120 over Williams CR is a steel stringer/multi-beam or girder carrying County RD 2120 over Williams CR in Lawrence County, Missouri. It was built in 1920 and reconstructed in 2005, so it is 105 years old, older 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 42 by 2043. The structure is 33 ft (10.2 m) long and 23 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCounty RD 2120
CrossesWilliams CR
LocationS 28 T 28 N R 26 W
RouteCounty Highway 379
CountyLawrence County
StateMissouri
Coordinates37.10088, -93.77251
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 protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating47.6 US tons
Inventory rating28.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length33 ft (10.2 m)
Longest span33 ft (10.1 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic42 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byOther Local 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 County RD 2120 over Williams CR built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 2005.

What condition is County RD 2120 over Williams 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 March 2023.

How much traffic does County RD 2120 over Williams CR carry?

About 30 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 2120 over Williams CR?

The structure is 33 ft (10.2 m) long with a longest span of 33 ft (10.1 m) and a deck 23 ft wide.

Who owns County RD 2120 over Williams CR?

It is owned by the County Highway Agency and maintained by the Other Local Agency.