US Bridges

Ia 148 over Middle Branch W 102 Rvr

Fair

Taylor County, Iowa · 2.8 Mi. S of SR J-20 · Structure no. 000000000049980

Built
1924
101 years old, rebuilt 1961
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
132 ft
3 main spans
Daily traffic
890
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 148 over Middle Branch W 102 Rvr is a concrete continuous slab carrying Ia 148 over Middle Branch W 102 Rvr in Taylor County, Iowa. It was built in 1924 and reconstructed in 1961, so it is 101 years old, older than the Iowa average of 45.5 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 890 vehicles a day, roughly 26% of them trucks, projected to reach 890 by 2044. The structure is 132 ft (40.2 m) long and 36 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

Open in Google Maps
CarriesIa 148
CrossesMiddle Branch W 102 Rvr
Location2.8 Mi. S of SR J-20
RouteState Highway 148
CountyTaylor County
StateIowa
Coordinates40.815, -94.73838
Functional classRural Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length132 ft (40.2 m)
Longest span51 ft (15.5 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic890 (2022)
Projected traffic890 by 2044
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 148 over Middle Branch W 102 Rvr built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1961.

What condition is Ia 148 over Middle Branch W 102 Rvr 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 January 2024.

How much traffic does Ia 148 over Middle Branch W 102 Rvr carry?

About 890 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is Ia 148 over Middle Branch W 102 Rvr?

The structure is 132 ft (40.2 m) long with a longest span of 51 ft (15.5 m) and a deck 36 ft wide.

Who owns Ia 148 over Middle Branch W 102 Rvr?

It is owned by the State Highway Agency.