US Bridges

Coolidge ST over BNSF RR

Good

Marion County, Iowa · 077211901 · Structure no. 000000000241471

Built
2017
8 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
175 ft
2 main spans
Daily traffic
150
2022 count
Owner
County
County Highway Agency

About this bridge

Coolidge ST over BNSF RR is a prestressed concrete stringer/multi-beam or girder carrying Coolidge ST over BNSF RR in Marion County, Iowa. It was built in 2017, so it is 8 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 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 11% of them trucks, projected to reach 150 by 2044. The structure is 175 ft (53.3 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCoolidge ST
CrossesBNSF RR
Location077211901
RouteCounty Highway 0
CountyMarion County
StateIowa
Coordinates41.46505, -93.31983
Functional classRural Minor Collector

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.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length175 ft (53.3 m)
Longest span106 ft (32.3 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic150 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Coolidge ST over BNSF RR built?

It was built in 2017, making it 8 years old in 2025.

What condition is Coolidge ST over BNSF RR 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 December 2024.

How much traffic does Coolidge ST over BNSF RR carry?

About 150 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Coolidge ST over BNSF RR?

The structure is 175 ft (53.3 m) long with a longest span of 106 ft (32.3 m) and a deck 27 ft wide.

Who owns Coolidge ST over BNSF RR?

It is owned by the County Highway Agency.