US Bridges

IH 69 Sb/Ih 45 NB over Misc City Streets

Fair

Harris County, Texas · IH 45/IH 69 Interchange · Structure no. 121020002713228

Built
1972
53 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,485 ft
3 main spans
Daily traffic
15,286
2010 count
Owner
State
State Highway Agency

About this bridge

IH 69 Sb/Ih 45 NB over Misc City Streets is a steel continuous stringer/multi-beam or girder carrying IH 69 Sb/Ih 45 NB over Misc City Streets in Harris County, Texas. It was built in 1972, so it is 53 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 15,286 vehicles a day, roughly 9% of them trucks, projected to reach 20,480 by 2028. The structure is 2,485 ft (757.4 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesIH 69 Sb/Ih 45 NB
CrossesMisc City Streets
LocationIH 45/IH 69 Interchange
RouteU.S. Route 59
CountyHarris County
StateTexas
Coordinates29.74529, -95.36266
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+30 approach)
Design loadHS 20
Structure length2,485 ft (757.4 m)
Longest span98 ft (29.9 m)
Deck width25 ft (7.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,286 (2010)
Projected traffic20,480 by 2028
Trucks9%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 69 Sb/Ih 45 NB over Misc City Streets built?

It was built in 1972, making it 53 years old in 2025.

What condition is IH 69 Sb/Ih 45 NB over Misc City Streets 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 December 2024.

How much traffic does IH 69 Sb/Ih 45 NB over Misc City Streets carry?

About 15,286 vehicles per day (2010 count), of which roughly 9% are trucks.

How long is IH 69 Sb/Ih 45 NB over Misc City Streets?

The structure is 2,485 ft (757.4 m) long with a longest span of 98 ft (29.9 m) and a deck 25 ft wide.

Who owns IH 69 Sb/Ih 45 NB over Misc City Streets?

It is owned by the State Highway Agency.