US Bridges

Main St-Marvin over Burlington Northern RR

Fair

Grant County, South Dakota · Main Street Marvin · Structure no. 000000026155047

Built
1940
85 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
287 ft
7 main spans
Daily traffic
125
2022 count
Owner
County
County Highway Agency

About this bridge

Main St-Marvin over Burlington Northern RR is a steel stringer/multi-beam or girder carrying Main St-Marvin over Burlington Northern RR in Grant County, South Dakota. It was built in 1940, so it is 85 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 fair condition with a lowest component rating of 5 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 125 vehicles a day, roughly 2% of them trucks, projected to reach 125 by 2032. The structure is 287 ft (87.5 m) long and 27 ft wide.

Location

Open in Google Maps
CarriesMain St-Marvin
CrossesBurlington Northern RR
LocationMain Street Marvin
RouteCounty Highway 0
CountyGrant County
StateSouth Dakota
Coordinates45.25753, -96.91281
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.4 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans7
Design loadH 10
Structure length287 ft (87.5 m)
Longest span56 ft (17.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2022)
Projected traffic125 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Main St-Marvin over Burlington Northern RR built?

It was built in 1940, making it 85 years old in 2025.

What condition is Main St-Marvin over Burlington Northern RR 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 August 2024.

How much traffic does Main St-Marvin over Burlington Northern RR carry?

About 125 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Main St-Marvin over Burlington Northern RR?

The structure is 287 ft (87.5 m) long with a longest span of 56 ft (17.1 m) and a deck 27 ft wide.

Who owns Main St-Marvin over Burlington Northern RR?

It is owned by the County Highway Agency.