US Bridges

184th Street over James River

PoorPosted for load

Spink County, South Dakota · 11S & 1.8E Frankfort · Structure no. 000000058218360

Built
1910
115 years old
Condition
Poor
inspected September 2024
Type
Truss - Thru
Steel
Length
260 ft
1 main span
Daily traffic
31
2022 count
Owner
County
County Highway Agency

About this bridge

184th Street over James River is a steel truss - thru carrying 184th Street over James River in Spink County, South Dakota. It was built in 1910, so it is 115 years old, older than the South Dakota average of 48.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 31 vehicles a day, roughly 2% of them trucks, projected to reach 31 by 2032. The structure is 260 ft (79.2 m) long and 18 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Carries184th Street
CrossesJames River
Location11S & 1.8E Frankfort
RouteCounty Highway 0
Coordinates44.71946, -98.26639
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating5 US tons
Inventory rating3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1 (+4 approach)
Design loadUnknown
Structure length260 ft (79.2 m)
Longest span140 ft (42.7 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deck15 ft (4.4 m)

Traffic and service

Average daily traffic31 (2022)
Projected traffic31 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 184th Street over James River built?

It was built in 1910, making it 115 years old in 2025.

What condition is 184th Street over James River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does 184th Street over James River carry?

About 31 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 184th Street over James River?

The structure is 260 ft (79.2 m) long with a longest span of 140 ft (42.7 m) and a deck 18 ft wide.

Who owns 184th Street over James River?

It is owned by the County Highway Agency.