US Bridges

IH 35 Nbml over Cibolo Creek & FM 1518

Fair

Guadalupe County, Texas · Bexar & Guadalupe C/L · Structure no. 150950001606192

Built
1993
32 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,495 ft
11 main spans
Daily traffic
53,461
2018 count
Owner
State
State Highway Agency

About this bridge

IH 35 Nbml over Cibolo Creek & FM 1518 is a prestressed concrete stringer/multi-beam or girder carrying IH 35 Nbml over Cibolo Creek & FM 1518 in Guadalupe County, Texas. It was built in 1993, so it is 32 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 53,461 vehicles a day, roughly 13% of them trucks, projected to reach 99,270 by 2033. The structure is 1,495 ft (455.7 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 35 Nbml
CrossesCibolo Creek & FM 1518
LocationBexar & Guadalupe C/L
RouteInterstate 35
CountyGuadalupe County
StateTexas
Coordinates29.58526, -98.30415
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans11 (+2 approach)
Design loadHS 20
Structure length1,495 ft (455.7 m)
Longest span125 ft (38.1 m)
Deck width60 ft (18.3 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53,461 (2018)
Projected traffic99,270 by 2033
Trucks13%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 35 Nbml over Cibolo Creek & FM 1518 built?

It was built in 1993, making it 32 years old in 2025.

What condition is IH 35 Nbml over Cibolo Creek & FM 1518 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 August 2024.

How much traffic does IH 35 Nbml over Cibolo Creek & FM 1518 carry?

About 53,461 vehicles per day (2018 count), of which roughly 13% are trucks.

How long is IH 35 Nbml over Cibolo Creek & FM 1518?

The structure is 1,495 ft (455.7 m) long with a longest span of 125 ft (38.1 m) and a deck 60 ft wide.

Who owns IH 35 Nbml over Cibolo Creek & FM 1518?

It is owned by the State Highway Agency.