US Bridges

Lawrence ST over Drainage

PoorClosed to traffic

Mitchell County, Iowa · 000000000 · Structure no. 000000000011090

Built
1950
75 years old
Condition
Poor
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
22 ft
1 main span
Daily traffic
167
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lawrence ST over Drainage is a steel stringer/multi-beam or girder carrying Lawrence ST over Drainage in Mitchell County, Iowa. It was built in 1950, so it is 75 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 2 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 167 vehicles a day, projected to reach 167 by 2043. The structure is 22 ft (6.7 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLawrence ST
CrossesDrainage
Location000000000
RouteCity Street 0
StateIowa
Coordinates43.43701, -92.78106
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width23 ft (7.1 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic167 (2022)
Projected traffic167 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lawrence ST over Drainage built?

It was built in 1950, making it 75 years old in 2025.

What condition is Lawrence ST over Drainage in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2023.

How much traffic does Lawrence ST over Drainage carry?

About 167 vehicles per day (2022 count).

How long is Lawrence ST over Drainage?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 23 ft wide.

Who owns Lawrence ST over Drainage?

It is owned by the City or Municipal Highway Agency.