US Bridges

Nelson Mill RD over James Rvr

Fair

Christian County, Missouri · S 5 T 27 N R 22 W · Structure no. 16993

Built
1900
125 years old, rebuilt 2024
Condition
Fair
inspected January 2025
Type
Girder and Floorbeam System
Steel Continuous
Length
208 ft
4 main spans
Daily traffic
60
2025 count
Owner
County
County Highway Agency

About this bridge

Nelson Mill RD over James Rvr is a steel continuous girder and floorbeam system carrying Nelson Mill RD over James Rvr in Christian County, Missouri. It was built in 1900 and reconstructed in 2024, so it is 125 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.

It carries about 60 vehicles a day, roughly 10% of them trucks, projected to reach 120 by 2045. The structure is 208 ft (63.4 m) long and 24 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesNelson Mill RD
CrossesJames Rvr
LocationS 5 T 27 N R 22 W
RouteCounty Highway 139
CountyChristian County
StateMissouri
Coordinates37.07636, -93.37107
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating52.6 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length208 ft (63.4 m)
Longest span60 ft (18.3 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2025)
Projected traffic120 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Nelson Mill RD over James Rvr built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 2024.

What condition is Nelson Mill RD over James Rvr 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 January 2025.

How much traffic does Nelson Mill RD over James Rvr carry?

About 60 vehicles per day (2025 count), of which roughly 10% are trucks.

How long is Nelson Mill RD over James Rvr?

The structure is 208 ft (63.4 m) long with a longest span of 60 ft (18.3 m) and a deck 24 ft wide.

Who owns Nelson Mill RD over James Rvr?

It is owned by the County Highway Agency.