US Bridges

107th Street over Dry Branch Creek

Fair

Brown County, South Dakota · 0.3N & 2.2W of Frederick · Structure no. 000000007082070

Built
2013
12 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
249
2022 count
Owner
County
County Highway Agency

About this bridge

107th Street over Dry Branch Creek is a prestressed concrete tee beam carrying 107th Street over Dry Branch Creek 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 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 249 vehicles a day, roughly 3% of them trucks, projected to reach 249 by 2032. The structure is 35 ft (10.7 m) long and 26 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Carries107th Street
CrossesDry Branch Creek
Location0.3N & 2.2W of Frederick
RouteCounty Highway 6170
Coordinates45.83674, -98.55427
Functional classRural Major 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length35 ft (10.7 m)
Longest span33 ft (10.1 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic249 (2022)
Projected traffic249 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 107th Street over Dry Branch Creek built?

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

What condition is 107th Street over Dry Branch 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 2023.

How much traffic does 107th Street over Dry Branch Creek carry?

About 249 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 107th Street over Dry Branch Creek?

The structure is 35 ft (10.7 m) long with a longest span of 33 ft (10.1 m) and a deck 26 ft wide.

Who owns 107th Street over Dry Branch Creek?

It is owned by the County Highway Agency.