US Bridges

407th Avenue over Mud Creek

Good

Brown County, South Dakota · 4.4S & 1E of Groton · Structure no. 000000007311374

Built
2023
2 years old
Condition
Good
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
98
2022 count
Owner
County
County Highway Agency

About this bridge

407th Avenue over Mud Creek is a prestressed concrete tee beam carrying 407th Avenue over Mud Creek in Brown County, South Dakota. It was built in 2023, so it is 2 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 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 98 vehicles a day, roughly 2% of them trucks, projected to reach 98 by 2032. The structure is 50 ft (15.2 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries407th Avenue
CrossesMud Creek
Location4.4S & 1E of Groton
Coordinates45.39369, -98.08279
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.2 US tons
Inventory rating27.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98 (2022)
Projected traffic98 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 407th Avenue over Mud Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is 407th Avenue over Mud Creek 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 September 2024.

How much traffic does 407th Avenue over Mud Creek carry?

About 98 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 407th Avenue over Mud Creek?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 32 ft wide.

Who owns 407th Avenue over Mud Creek?

It is owned by the County Highway Agency.