US Bridges

Locust Street over Marne Creek

Fair

Yankton County, South Dakota · Locust Street - Yankton · Structure no. 000000068119196

Built
1984
41 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
343
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Locust Street over Marne Creek is a prestressed concrete tee beam carrying Locust Street over Marne Creek in Yankton County, South Dakota. It was built in 1984, so it is 41 years old, younger than the South Dakota average of 48.9 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 343 vehicles a day, roughly 5% of them trucks, projected to reach 343 by 2032. The structure is 50 ft (15.2 m) long and 50 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesLocust Street
CrossesMarne Creek
LocationLocust Street - Yankton
RouteCity Street 0
Coordinates42.88614, -97.39977
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width50 ft (15.2 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic343 (2022)
Projected traffic343 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Locust Street over Marne Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Locust Street over Marne Creek 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 September 2024.

How much traffic does Locust Street over Marne Creek carry?

About 343 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Locust Street over Marne Creek?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 50 ft wide.

Who owns Locust Street over Marne Creek?

It is owned by the City or Municipal Highway Agency.