US Bridges

Mykawa RD SB over Sims Bayou

Good

Harris County, Texas · 0.70 MI S of Bellfort DR · Structure no. 121020B68025003

Built
1998
27 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
309 ft
3 main spans
Daily traffic
5,500
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mykawa RD SB over Sims Bayou is a prestressed concrete box beam or girders - multiple carrying Mykawa RD SB over Sims Bayou in Harris County, Texas. It was built in 1998, so it is 27 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,500 vehicles a day, projected to reach 10,000 by 2031. The structure is 309 ft (94.2 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMykawa RD SB
CrossesSims Bayou
Location0.70 MI S of Bellfort DR
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.65498, -95.31495
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length309 ft (94.2 m)
Longest span103 ft (31.4 m)
Deck width36 ft (10.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,500 (2011)
Projected traffic10,000 by 2031
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$20,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mykawa RD SB over Sims Bayou built?

It was built in 1998, making it 27 years old in 2025.

What condition is Mykawa RD SB over Sims Bayou 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 October 2023.

How much traffic does Mykawa RD SB over Sims Bayou carry?

About 5,500 vehicles per day (2011 count).

How long is Mykawa RD SB over Sims Bayou?

The structure is 309 ft (94.2 m) long with a longest span of 103 ft (31.4 m) and a deck 36 ft wide.

Who owns Mykawa RD SB over Sims Bayou?

It is owned by the City or Municipal Highway Agency.