US Bridges

IH 45 NB Conn D over SP 5 NB Conn RR Elgin

Fair

Harris County, Texas · 1.80 MI SE of US 59 · Structure no. 121020050003266

Built
1985
40 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,528 ft
3 main spans
Daily traffic
22,370
2014 count
Owner
State
State Highway Agency

About this bridge

IH 45 NB Conn D over SP 5 NB Conn RR Elgin is a steel continuous stringer/multi-beam or girder carrying IH 45 NB Conn D over SP 5 NB Conn RR Elgin in Harris County, Texas. It was built in 1985, so it is 40 years old, younger 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 22,370 vehicles a day, roughly 6% of them trucks, projected to reach 31,310 by 2034. The structure is 1,528 ft (465.7 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIH 45 NB Conn D
CrossesSP 5 NB Conn RR Elgin
Location1.80 MI SE of US 59
RouteInterstate 45
CountyHarris County
StateTexas
Coordinates29.72908, -95.33732
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+14 approach)
Design loadHS 20
Structure length1,528 ft (465.7 m)
Longest span175 ft (53.3 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,370 (2014)
Projected traffic31,310 by 2034
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.9 mi (3 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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 45 NB Conn D over SP 5 NB Conn RR Elgin built?

It was built in 1985, making it 40 years old in 2025.

What condition is IH 45 NB Conn D over SP 5 NB Conn RR Elgin 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 October 2024.

How much traffic does IH 45 NB Conn D over SP 5 NB Conn RR Elgin carry?

About 22,370 vehicles per day (2014 count), of which roughly 6% are trucks.

How long is IH 45 NB Conn D over SP 5 NB Conn RR Elgin?

The structure is 1,528 ft (465.7 m) long with a longest span of 175 ft (53.3 m) and a deck 42 ft wide.

Who owns IH 45 NB Conn D over SP 5 NB Conn RR Elgin?

It is owned by the State Highway Agency.