US Bridges

104th Street over Maple River

Good

Brown County, South Dakota · 3.3N & 1.8E of Frederick · Structure no. 000000007121040

Built
2013
12 years old
Condition
Good
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
112 ft
2 main spans
Daily traffic
150
2022 count
Owner
County
County Highway Agency

About this bridge

104th Street over Maple River is a prestressed concrete tee beam carrying 104th Street over Maple River in Brown County, South Dakota. It was built in 2013, so it is 12 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 150 vehicles a day, roughly 2% of them trucks, projected to reach 150 by 2032. The structure is 112 ft (34 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries104th Street
CrossesMaple River
Location3.3N & 1.8E of Frederick
RouteCounty Highway 0
Coordinates45.87965, -98.47591
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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHL 93
Structure length112 ft (34 m)
Longest span55 ft (16.9 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic150 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 104th Street over Maple River built?

It was built in 2013, making it 12 years old in 2025.

What condition is 104th Street over Maple River 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 2023.

How much traffic does 104th Street over Maple River carry?

About 150 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 104th Street over Maple River?

The structure is 112 ft (34 m) long with a longest span of 55 ft (16.9 m) and a deck 31 ft wide.

Who owns 104th Street over Maple River?

It is owned by the County Highway Agency.